do i need a visa to enter beijing and how can i apply for it?

Hye, i am kong, i am malaysian. i want to ask some question i already book flight ticket to beijing for tourist only for one week. i going with my family for 8 person. i must apply a tourist entry permit or not? if i must apply, where did i go to apply for it and how much that i must pay for 1 person.Then i also want to ask what document should i bring when i go to apply.