I want to travel with my family to HK this January. Can I also apply for my HK visa from India?

I'm Nepali pp holder living along with my family on India for 5 years now. I have got my US, Australia and Uk visas from India itself. If so, then from which city? I have also heard that Nepalese pp holders cannot fly back to India straight from china or HK..is it true? Your answers will be highly valuable as there's nothing mentioned about it on website plus the Chinese embassy weren't very helpful. Please help!!