bùzhuóhénjī
ㄅㄨˋ ㄓㄨㄛˊ ㄏㄣˊ ㄐㄧ
Simplified 不着痕迹
Taivo → Settings → Partner inbox → Make the link. It stays in this browser.
Keep 不著痕跡 and it comes back until you know it.