满5000，随机减15-99
https://mp.weixin.qq.com/s/ba6duQAJO-wqJSBRD1_vQQ
满3000，随机减3.8-99
https://mp.weixin.qq.com/s/olngxlqWaR-Upk0OlNe_ug
满1000，立减1.8
https://mp.weixin.qq.com/s/NkKjnG8fiivgc2O_jJpdKw
满99，随机减1-99
https://mp.weixin.qq.com/s/qBh_yipHSDqN4L4rCBjJbw