Aliyun announced a sale plan. 2C2G3M one year cost 99CNY (no renew).

TencentCloud got a 4C16G12M half year plan for 156CNY, but only for newly registered account.

So the aliyun is the only option I can actually buy. But I wonder if 3Mbps is enough for minecraft server.

----
xCyGzM means the server has x vCores and y GB of RAM, with z Mbps public internet bandwidth.