Do I need to exchange Hong Kong dollars for traveling in Hong Kong?

This place needs to be exchanged for Hong Kong dollars.

According to the information in No.1 Library, Hong Kong dollars are needed for traveling in Hong Kong, whether by taxi, subway or bus. Before going to Hong Kong, you can make an appointment at the counter of China Bank one day in advance, and then go to the counter to exchange Hong Kong dollars the next working day.

However, many shops in Hong Kong don't need Hong Kong dollars. For example, chain stores such as Wanning and Watsons can pay with Alipay. Besides enjoying the preferential real-time exchange rate, Alipay can also receive coupons and participate in various discount activities. These shops are basically skin care products, luxury goods and pharmacies that mainland tourists like to go to.