[8.1.1 优惠券](9.2.1%E4%BC%98%E6%83%A0%E5%88%B8.md) [8.1.2 拼团](9.2.4%E6%8B%BC%E5%9B%A2.md) [8.1.3 秒杀](9.2.5%E7%A7%92%E6%9D%80.md) [8.1.4 砍价](9.2.6%E7%A0%8D%E4%BB%B7.md) [8.1.5 短视频](9.2.16%E7%9F%AD%E8%A7%86%E9%A2%91.md) [8.1.6 微信直播](9.2.17%E5%BE%AE%E4%BF%A1%E7%9B%B4%E6%92%AD.md)