I kid you not, summer in Hong Kong is blardy warm.
If it wasn't because I've been to the Hong Kong Disneyland, I probably will get super upset with the weather. Thankfully, I've been there and I didn't bother to wait until the firework show. By 3 pm, I just wanted to go back to the hotel and stay in with 16C air-conditioner cold room.
The first thing I did when I got back to my hotel room - shower and apply mask sheet.
tip: keep your mask sheet/mask pack in the mini-fridge in the hotel room to enjoy the cooling mask whenever you need it!