xuánzhuǎnqūmiàn
ㄒㄩㄢˊ ㄓㄨㄢˇ ㄑㄩ ㄇㄧㄢˋ
Simplified 旋转曲面
Taivo → Settings → Partner inbox → Make the link. It stays in this browser.
Keep 旋轉曲面 and it comes back until you know it.