yuānjiāduìtóu
ㄩㄢ ㄐㄧㄚ ㄉㄨㄟˋ ㄊㄡˊ
Simplified 冤家对头
Taivo → Settings → Partner inbox → Make the link. It stays in this browser.
Keep 冤家對頭 and it comes back until you know it.