Iwouldlike to visit China fora week or 10 days to see my son in tourist L type

and then from there i want go to usa for which i have 10 yr multiple visa to visit my another son. pl tell me if i get chinese visa, after sight seeing at china, is it possible for me to go to US from Beijing.while applying for it in india, what type of i ll have to apply. After visiting US,ill get back to india. Kindly advice. TTSugumar