Well it's not the US?
The B1 visa is designated for temporary business travel, including travel for negotiating contracts, attending exhibitions and conferences, short-term training, and consultations with suppliers and customers, etc.
The B2 visa is designated for tourist activities, such as sightseeing, visiting friends and relatives, obtaining medical treatment, etc. The B1 and B2 visas are not valid for employment in the United States.
All B1/B2 applicants should prepare to present the following documentation and any other relevant information at the time of the interview:
Valid Passport: B1/B2 visa applicants must have passports valid for six months beyond their intended period of stay in the United States. If your passport will expire less than 6 months from the date you plan to leave the United States, or is damaged, or you do not have a page for a visa, please get a new passport before your interview.
One Photograph: Two inches square color photograph, less than 6 months old, against a white background, full frontal view. The photo should be glued to the printed DS-160 confirmation page. Click for more information on photo requirements.
Original Bank Receipt for Application Fee: The application fee may be paid at any CITIC Bank branch in China.
Completed Visa Application Forms: DS-160 online application form.
Evidence of Why You Will Return to China: Please present proof of economic, social, family, or other commitments that will help demonstrate that you intend to return to China after a temporary stay in the United States. Evidence can vary depending on the applicant’s personal situation. The following are mere suggestions that may help the consular officer to assess your intentions to return to China. This is not an exhaustive list of what applicants should present at their interview: Hukou Registration, ID card, proof of employment, pay statement that shows regular monthly salary, and bank books with regular deposits and withdrawals.
Invitation Letter: If you are invited to visit someone in the United States, provide information about who is inviting you, purpose of travel, and planned itinerary or schedule. No invitation letter is needed if you are only sightseeing in the United States.
If Traveling for Business: Bring specific information about where you will go, who you will meet, what you will discuss, and what products you plan to buy in the United States. The following documents may be helpful: detailed letters from U.S. business partners indicating the purpose of the trip; copies of contracts or other agreements with U.S. business partners; and information on machines, software or other equipment to be examined, tested or purchased in the United Sates, such as brochures or product catalogues.
If Going to Visit Family: You should provide proof that you have a genuine, ongoing relationship with the person inviting you, and provide information about his/her immigration status in the United States. The following documentation may be helpful: Hukou registration or other proof of genuine family relationship, photos with the U.S. family members in recent years, copy of his/her U.S. passport or green card, copy of his/her passport and U.S. visas, etc. If you previously stayed in the United States longer than the period given on your I-94 form at the U.S. port of entry, you should present the original letter of extension issued by the U.S. Department of Homeland Security.