hi sir my name is priya working in dubai, How can I apply for a China visa to visit my brother from Dubai?

If you work in Dubai, you can apply for a China tourist visa from Consulate-General of the People's Republic of China in Dubai. The documents required are as follows:
1. Original passport with blank visa pages and validity of more than 6 months;
2. UAE resident visa valid for more than 6 months and Copies of the data pages;3. Application Form which must be completed neatly and signed by yourself;
4. One passport photo;
5. A No-objection letter from your company stating your position, monthly or yearly salary;
6. Invitation letter from your brother in China.
if both of your passport and resident visa is valid less than 6 months, you will need to apply for a passport renewal first, and if possible, you need to apply for China visa in your home country.