According to the Rules Governing the Implementation of the Law of the People's Republic Of China on the Entry and Exit of Aliens, for entry into China, aliens shall apply for visas from Chinese diplomatic missions, consular posts or other agencies resident abroad authorized by the Ministry of Foreign Affairs. Aliens who hold ordinary passports issued by countries which have diplomatic relations or official trade links with China and have a letter(s) or telegram(s) from authorized units in China, may apply to the visa-granting departments at port of entry as authorized by the Ministry of Public Security, under any of the following circumstances:
(1). He or she is invited at the last minute by a Chinese host to come to China for a trade fair;
(2). He or she is invited to come to China to submit a tender or to sign a formal economic or trade contract;
(3). He or she coming to China by appointment to supervise the inspection of import and export commodities or to participate in a check-and-accept operation in accordance with contracts;
(4). He or she is invited to participate in the installation of equipment or in the emergency repair of engineering projects;
(5). He or she coming to China at the request of the Chinese side to solve a problem of claims;
(6). He or she is invited to come to provide technical advisory services;
(7). He or she is coming to China due to a last-minute change in the composition of a visiting group and with consent of the Chinese side after the visas are granted to the original visiting group;
(8). He or she coming to China to see patients in critical conditions, or to undertake funeral matters;
(9) owing to force majeure, transit visa holders cannot leave the China within twenty-four hours by taking the original plane or by taking other means of transportation;
(10) other invited guests who really have no time for visa application to the aforesaid Chinese agencies resident abroad, and who hold letter(s) or telegram(s) from competent authorities with a consent for them to apply for a visa at the designated entry ports.
Visa applications are not accepted by the visa-granting agencies at entry ports from those who do not conform with the aforesaid circumstances.
Visa-issuing departments at port of entry, as authorized by the Ministry of Public Security, are stationed at the following ports:
Beijing, Shanghai, Tianjin, Dalian, Fuzhou, Xiamen, Xi'an, Guilin, Hangzhou, Kunming, Guangzhou (Baiyun Airport), Shenzhen (Luohu, Shekou), Zhuhai(Gongbei), Haikou, Sanya, Qingdao, Weihai, Yantai.
Please be noticed that there is no absolute guarantee that you can obtain a visa at the port in which you arrived. Therefore it is advisable to get your China visa before you come to China.