Hello and thank you for your kind review. I can't read Chinese, but I had some help. Sorry you found the towel rail hot - they are not elecric, they have warm water inside. I haven't had other complaints about them being too hot, but I can have them adjusted to reduce the temperature so we will arrange this promptly. Thank you so much for the feedback!
Thank you for your lovely review - we really enjoyed hosting you.
Yes, you can't book a room for two and arrive with four people - your children are counted as humans too, just like when you buy tickets for seats on the plane. Upgrading to 3 doesn't work either when there are 4 of you - that is what you booked and it is quite clear on the booking site. Sorry if you found this onerous, but it's pretty simple really and the time you took was negotiating with Trip.com not us. What you need to do, which I'm sure you know, is put the number of guests that you will be travelling with in the booking and then you won't have this problem.