在微信所主导的社交领域上，抖音显然从未放弃过布局。2024年3月，抖音推出“合养精灵”功能：只要与好友连续互发消息3天，双方即可点亮“火花”标识；连续互发6天，则可以邀请对方共同养一只“小火人”。随着互动天数的增加，火花数值与小火人等级同步提升；一旦超过24小时未产生互动，火花与小火人便会变为灰色，若在规定时间内未恢复互动，甚至会彻底消失。
Nature, Published online: 24 February 2026; doi:10.1038/d41586-026-00514-y
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Patients are being told to assume their appointments and treatments will go-ahead, unless they are told otherwise.
It was ordered after a letter, understood to have been written by a former Wembley employee, raised concerns about safety measures.