China's 240-hour transit rule now covers Vietnam, and the UK was already on it

A Heathrow to Hanoi ticket with ten days in Shanghai in the middle and a Heathrow to Shanghai return are two different legal situations, and the leg you fly after China is what separates them. On 20 August 2026 China added Vietnam to its 240-hour visa-free transit policy. That is direct news for the Vietnamese community here and for anyone booking flights for a household where the passports do not match. It is also, for a lot of British travellers, the first time they will hear that this policy exists at all.

The UK has been on that transit list since long before Vietnam joined. Right now it hardly registers, because a British passport walks into China for 30 days on nothing at all. That waiver has an end date written into it, and the transit rule is what is left underneath.

What changed on 20 August 2026

China's National Immigration Administration announced both changes on the day they took effect. Vietnam and Kyrgyzstan joined the 240-hour visa-free transit policy, taking it to 57 countries, and joined the separate 30-day visa-free entry policy for Hainan Province, now 61 (Xinhua, 20 August 2026).

The transit rules themselves did not move, and they are precise. You need an ordinary passport and an interline ticket with a confirmed date and seat to a third country or region. You enter through one of 65 open ports across 24 provinces, autonomous regions and municipalities, and you can stay up to 240 hours, ten days, inside the permitted areas (National Immigration Administration). Tourism, business, exchange visits and family visits are allowed. Work, study and journalism are not, and still need their own visa.

Read that NIA page for the rules, not for the country list. Checked on 24 August 2026 it still said 55 countries, four days after the announcement that made it 57. The counting is generous, at least. The clock starts at 00:00 on the day after you enter rather than the minute the wheels touch, so a 21:00 arrival at Pudong buys you that evening plus ten full days.

Vietnam was China's fourth-largest source of inbound travellers in the first half of 2026, which is why this particular addition got the coverage it did. Vietnam's Ministry of Foreign Affairs welcomed both policies through its spokesperson the same day and said it hoped China would keep simplifying (Nhan Dan, 20 August 2026).

The ticket out is the whole rule

Heathrow to Shanghai and back to Heathrow does not qualify. Manchester to Beijing and home does not qualify. This is a transit policy. You arrive from one country and you leave for a different one, and a return ticket to where you started is the exact case it excludes. Booking nine days instead of ten changes nothing. If China is the whole trip, this policy is not for you, and nothing below that line helps.

Which is why the rule suits the UK's Vietnamese community better than it suits someone flying out of Hanoi. A Vietnamese passport holder going from London to see family in Vietnam already has the qualifying shape without doing anything clever. The UK is the country you left, Vietnam is the third country you are carrying on to, and China sits in the middle. Fly the same policy out of Hanoi and you have to invent the onward leg and pay for it. Fly it out of Heathrow and it is the flight you were booking anyway. That is the argument for taking this seriously here even though it reads like a Hanoi story.

Routes that work from Heathrow and Manchester

Three shapes, and in each one the onward leg is ticketed before you fly rather than promised for later.

• Heathrow to Shanghai Pudong, ten days in and around Shanghai, then Shanghai onward to Hanoi or Ho Chi Minh City. The family-visit routing, and the one the policy fits best.
• Manchester through a European or Gulf hub into Beijing, a week in the north, then out of a different Chinese port to Bangkok, Seoul or Tokyo. Entry and exit ports do not have to match.
• The same thing read backwards on the way home: Hanoi to Guangzhou Baiyun or Nanning Wuxu, a few days in Guangdong or Guangxi, then onward to London.

Hong Kong and Macau come up constantly as the cheap way to satisfy the onward leg, so here is the honest state of it. Under the long-running mechanics of the 240-hour policy, Hong Kong, Macau and Taiwan count as third regions, which is why a Hong Kong ticket satisfies the onward requirement for the nationalities that were already on the list. Nothing published since 20 August 2026 confirms that specifically for Vietnamese passports, and the NIA's English page never names Hong Kong or Macau anywhere in its text. It says "third country or region", and we read that as covering Hong Kong. We would still not bet a non-refundable trip on a ground agent at Heathrow reading it the same way at 06:00. If you want no argument at all, make the onward leg a foreign country.

What a British passport gets, and until when

Ordinary UK passport holders can enter China without a visa for up to 30 days, for business, tourism, visiting family and friends, exchange and transit, from 00:00 on 17 February 2026 to 24:00 on 31 December 2026 Beijing time. That is the Chinese Embassy in London's own wording (Notice on China's Visa Waiver Policy for the UK and Canada, 16 February 2026, checked 24 August 2026). It is a trial with an expiry date, not a standing arrangement.

The UK is also named directly on the 240-hour transit list, in the NIA's own text, alongside Russia and the United States. So the fallback already exists if 31 December passes without a renewal. A British passport would still get ten days in Shanghai or Beijing on the transit terms above, with the third-country leg as the price of admission. China has widened these schemes repeatedly through 2026, two more countries on 20 August alone, which is a reason to expect a renewal rather than a promise of one. Thirty unconditional days is plainly the better deal while it runs, and that is the case for putting a China trip in the diary before the end of the year rather than next spring. We looked at the expiry and what renewal would actually mean separately, in what happens to China's visa-free entry after 31 December 2026.

If your household holds both passports, the two of you are not on the same rulebook even on the same booking. Until the end of the year the British passport needs nothing. The Vietnamese passport needs a ticketed onward flight to somewhere that is not the country you departed from. Book that onward leg for both of you regardless, because the person who needs it needs it at the check-in desk in the UK, not at immigration in China.

Hainan for thirty days, and what the paperwork costs

The Hainan half of the 20 August announcement got less attention than it deserved. Thirty days, ordinary passport, and entry through Hainan's open ports. The policy text itself sets no onward-ticket condition (National Immigration Administration), which is what makes it the easier door. Practice is stricter than the text: VnExpress reported on 24 August 2026 that arriving Vietnamese travellers are asked for a ticket out of the mainland, six months of passport validity, a hotel booking on the island and an arrival declaration. The difference that matters is which ticket counts. A return flight home, the one that disqualifies you under the 240-hour rule, satisfies Hainan. The trade is geography. You stay in Hainan: Haikou, Sanya, the east coast beaches, and that is the trip. No side trip to Shenzhen, no train north. For a family fortnight on a beach that constraint costs nothing and hands you three times the days of the transit route with none of the routing homework. For anyone whose mental picture of China is Shanghai or Xi'an, it gives nothing at all. British passport holders can ignore it entirely while the national waiver runs, since that one already covers the whole country.

Those visa figures are the published schedule of the Chinese Visa Application Service Center in Hanoi: 45 USD for a single-entry visa, paid in dollars when you collect the passport, plus a 690,000 VND service fee, paid in dong at submission and not refunded if the visa is refused. Express is 70 USD and 1,040,000 VND, urgent is 82 USD and 1,380,000 VND (CVASC Hanoi schedule of fees, checked 24 August 2026). At the rates that day, 1.36 USD and 35,584 VND to the pound, a standard tourist visa works out at about £52 per person, express about £81, urgent about £99.

One thing catches people out here. That schedule belongs to the Hanoi centre. A Vietnamese passport holder living in the UK applies in London and pays London's published schedule, which is set separately, so check the centre you will physically walk into rather than the one nearest your passport.

Where this breaks

The failure is almost never at immigration in Shanghai. It is at the check-in desk at Heathrow or Manchester, where a ground agent has to decide whether to board a passenger holding no Chinese visa, and where being wrong costs the airline a fine. That asymmetry is why they read the rule conservatively and you should too. Carry a printout of the NIA policy page and your onward booking on paper. Do not fly on an unticketed hold or an Avios seat still waiting to clear, because "confirmed date and seat" is the literal wording of the rule. And check your entry port against the current official list rather than a forum thread from three years ago, because the ports and the permitted areas have been redrawn several times since this policy started life as 72 hours.

There is an AI problem here too. Ask most assistants today whether a Vietnamese citizen needs a visa for China and you get a confident yes or a confident no, and neither answer carries the third-country condition. Ask about a British passport and you may well get an answer that predates 17 February 2026 altogether. It is the same failure we wrote about in how to fact-check an AI travel itinerary: right about the headline, wrong about the clause that decides your boarding pass. Border admin is moving fast in both directions this year, and the EU's new entry system is the other half of that story for anyone flying out of the UK.

Sort the phone out before you land as well. Arrival halls are where roaming charges bite hardest, and the honest cost maths on day passes versus travel eSIMs applies to a Shanghai stopover exactly as it does to a European one.

If you are building the ten-day version, book the exit flight first. Nothing else in the trip is bookable until that ticket exists, because it is the thing that gets you in. Plan it in Travolp and put that departure into the itinerary as a fixed anchor rather than an afterthought at the end.