Hi, currently I am a student in Malaysia. I plan to go China twice in this year. Both of the trip is for different purposes. One is going for an internship from May until June, another one is going for travel on October. I am going to travel follow a travel agency but going for an internship by my own. My question is :
1) How many times visa shall I apply?
2) The visa should I apply is F Visa?
3) What is the best place to visit in China on May and June?

Thank you!