Family stay in mainland China is a visa-letter-plus-residence-sticker path, not a free add-on to a tourist stamp. Q and S categories split who hosts you. After entry, the long-stay versions still need an Exit-Entry residence permit: Apply for a residence permit.
Which visa letter matches your family story?
Q1 is the common long-stay reunion route with a Chinese citizen or a foreigner who holds Chinese permanent residence. Q2 is the short visit version of that family map. S1 is the common long-stay route for a spouse, parent, child under 18, or parent-in-law of a foreigner already residing in China for work, study, or another permitted purpose. S2 is the short visit version. Embassy and visa-centre category pages list those purpose lines; city Exit-Entry desks then convert Q1 or S1 into residence stickers after you land.
Kinship proof usually means marriage or birth certificates with apostille or legalisation rules that match your passport country, plus Chinese translations when the local window demands them: Apostille documents. If you married in mainland China first, keep the Civil Affairs marriage booklet ready: Marriage registration. The host supplies an invitation letter and their Chinese ID, residence permit, or permanent-resident card, depending on the route.
What happens after you enter on Q1 or S1?
Register temporary accommodation within 24 hours if a hotel did not file for you: Register address. Then apply in person at Exit-Entry with passport, application form, photos, accommodation registration, invitation and relationship papers, and the host’s identity or residence proof. National guidance puts residence-permit applications for these long-stay entries inside 30 days of entry. Some cities also ask for a recent foreigner medical exam when the requested residence validity is long.
S1 residence length often tracks the host’s own residence permit. Q1 validity bands differ by age and city practice; Beijing English instructions publish multi-year ceilings for some family applicants, so treat each city’s checklist as binding. Renewals need fresh host evidence before expiry: Renew a residence permit. Switching later into work or study is a purpose change, not a quiet renewal: Change status of residence. Mandarin-only counters are common: Chinese bureaucracy without Chinese.
Common misconceptions
Assuming an S2 or Q2 visit stamp is enough for a school year fails. Short visit categories are not long residence products.
Assuming every spouse can work freely on a family residence sticker also fails. Paid work still needs its own Foreigner's Work Permit path when the law requires one: Get a work permit.
Summary
Pick Q for Chinese-citizen or permanent-resident hosts and S for dependants of foreigners already residing for work or study, enter on the long-stay version when you need months not weeks, then convert to a residence permit at Exit-Entry inside the post-entry clock with kinship proof and address registration already in the folder.
Sources
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