https://developers.weixin.qq.com/community/develop/doc/000a66f6be8c2830f7da3d36f56c00?highLine=%25E8%2599%259A%25E6%258B%259F%25E6%2594%25AF%25E4%25BB%2598%25E9%2599%2590%25E9%25A2%259D 这个帖子里官方回复的 ，学费是否算作虚拟物品？