Assure a power of attorney or obtain other notarial services can be in one of the Consulates General of Russia. In southern China will be convenient to go to Hong Kong or Guangzhou.
Russian gene. Consulate in Hong Kong is located in Wan Chai, Address: 30 Harbour Road, Sun Hung Kai Centre, 21 floor, 2106-2123; Phone: +852 28777188. Nearest metro station Wan Shai and foot or by bus from Hung Hom №104 and other. For taxes: Sun Hung Kai Centre, 30 Harbour Road, Wanchai, Hong Kong. To get on the notarial services, you must first make an appointment, написав на email@example.com.