i'm studying for 2 months at guangzhou uni of tcm do I need to fill up the supplementary application form?

Questions:

1. Do i still need to fill up the supplementary application form if i'm only studying for 2 months?
2. What does the phrase, "If someone else travelling with you shares the same passport." mean?

Because my brother and mother will go to China with me but only as tourists.. does this mean we still need to fill up the supplementary form because we are traveling together?

3. Do we have to show proof of booked hotel and flight along with other requirements for tourist visa and student visa?

Please enlighten me on this one. thanks! :)