I heard that the travel society in Hong Kong and Macao forces shopping. Is it true?/You don't say.

Yes, there are many informal travel agencies, but you can't find a regular travel agency because they will make it clear to you before you sign the contract. This is a shopping group and a normal group. It depends on which group you choose before signing the contract. For example, Shenzhen Dynasty International Travel Service and Shenzhen Overseas Travel Service.