Yiwu's travel plan to Hong Kong is similar to these.

Hong Kong is a place suitable for shopping. If you play, you will have almost enough fun in 2 3 days. There are only two places to go. You may have to fly to Hangzhou. Another is to fly to Shenzhen, and then fly to Hong Kong and Shenzhen by boat 1 hour. This ticket is very cheap. Haha, by the way, you need to apply for a Hong Kong and Macao pass before you go, otherwise you won't pass the customs.