chǐlúnchǐtiáo
ㄔˇ ㄌㄨㄣˊ ㄔˇ ㄊㄧㄠˊ
Simplified 齿轮齿条
Taivo → Settings → Partner inbox → Make the link. It stays in this browser.
Keep 齒輪齒條 and it comes back until you know it.