it's a fantasy creature created by the operation team. They call it 肉骨獸, the meaning should be "creature of meat and bone". Anyway it's kinda cute.

Awirn: Thank you for the information on the mascot name! I guess such information could never obtained among the people who don't speak or read Chinese.
Indeed! it’s round figure gives an impression of cute character but at the same time I can’t forget the eerie feeling I got when I saw it has no head.

But as designer I have to say I’m astonished by how they came up with this mascot. Such a bravery to bring and launch this concept.