Hi dear i will like to leave Cameroon to hongkong by Tourist. i need ur information.

Oben, you need to apply for a visitor type for your trip to HK from Chinese embassy or consulate in your country. You should prepare these documents:
1. copies of your passport information page and previous entry permits(if you have)
2. finished application form (ID1003A form) and a recent passport photo
3. flight itineraries and accommodation booking
4. financial proof, such as recent six months bank statement, pay slip and your employment certificate