Question: How can Hong Kong residents (students, non-permanent residents) apply for a visa to Taiwan directly in Hong Kong with their passport?

It can be done. But not with a passport.

Mainland non-permanent residents who have settled in Hong Kong can only apply as mainland residents with the right of residence in a third country, and can apply for a 15-day tourist visa at a time.

Bring all your ID card, identity visa certificate, one-way permit, photos and other information. If you are accompanied by a Hong Kong permanent resident to Taiwan, you do not need to submit proof of property. If you go to Taiwan alone, you need to submit NT$200,000. certificate of deposit.

Submit your application at the Taiwan Economic and Cultural Office in Admiralty. After the application is approved, entrust a travel agency to apply for the Taiwan Entry Permit (you need to submit a Taiwan air ticket when collecting it). From personal experience, China Travel Service Hong Kong is the cheapest, charging 450 yuan and receiving it in 2 weeks.

It is better to call for details.