1 can be a calligraphy teacher or a foreigner.
You can join the China Calligraphy Association.
You can go to the publishing house to help others write new book titles and inscriptions.
The most modern and economical way is to apply for a job in a print advertising company.
You can publish copybooks.
6 Manuscript version of China's classical books.
Now that China culture has begun to revive, it is not impossible for your father to become a pioneer if he is willing to develop in this direction.