微信公众号回复的引号不能够正常显示，显示的是&#34编码

Question

在nodejs的控制台显示回复的内容如下，

{"errcode":0,"query":"查一下明天从北京到上海的南航机票","semantic":{"details":{"airline":"中国南方航空公司","answer":"好的，你订了从北京市到上海市，2019-03-24出发的航班，请确认。","context_info":{"isFinished":"1","null_times":"0"},"end_loc":{"city":"上海市","city_simple":"上海|沪|申","loc_ori":"上海","modify_times":"0","slot_content_type":"2","type":"LOC_CITY"},"hit_str":"查 一下 明天 从 北京 到 上海 南航 机票 ","sort":"1","start_date":{"date":"2019-03-24","date_lunar":"2019-02-18","date_ori":"明天","modify_times":"0","slot_content_type":"2","type":"DT_ORI","week":"0"},"start_loc":{"city":"北京市","city_simple":"北京","loc_ori":"北京","modify_times":"0","slot_content_type":"2","type":"LOC_CITY"}},"intent":"SEARCH"},"type":"flight"}

但是回复到了微信手机端就变成了：

{"errcode":0,"query":"查一下明天从北京到上海的南航机票","semantic":{"details":{"airline":"中国南方航空公司","answer":"好的，你订了从北京市到上海市，2019-03-24出发的航班，请确认。","context_info":{"isFinished":"1","null_times":"0"},"end_loc":{"

所有的引号不能够正常显示，请问这是什么问题呢？