Please advice for Entry visa requirements based on Tourism grounds in China for Iranian nationals.

Greeting from Iran
To whom it may concern
Please advice for Entry visa requirements based on Tourism grounds in China for Iranian nationals.
We are 6 family members that are planning to visit China.
Please note our start of trip is planned to enter china from Malaysia.
Kindly advice visa application processing time.
I look forward to your positive response, Kindly reply to
Thank you
Kind regards
Mr. Rez