How much is the traffic fee of Hong Kong Unicom card?

Chinese mainland Unicom users' roaming charges in Hong Kong are: 5 yuan /5MB/ day, which will be automatically added to 25 yuan/day, and the charges will be capped. That is, users roaming to Hong Kong, Macao and Taiwan on the same day (Beijing time) will be charged 5 yuan roaming data traffic fee. After 5MB, it will be charged automatically according to 5 yuan /5MB. When the data usage reaches 25MB, it will be automatically upgraded to the daily fee capped by 25 yuan, and the data traffic can be used at will.