Question concerning Tourist Visa, Multiple Entry, 1 year, 90 days

I am currently on a tourist L multiple entry 90 day. It expires in July. I am currently living here and do not plan on returning home soon. How should I go about getting a one year tourist L, 90 day, multiple entry. From my understanding I go to Hong Kong, stay there for a few days, mail my passport to the states and they send it express to me in Hong Kong with my one issued. Correct?