xiànxìngkōngjiān
ㄒㄧㄢˋ ㄒㄧㄥˋ ㄎㄨㄥ ㄐㄧㄢ
Simplified 线性空间
Taivo → Settings → Partner inbox → Make the link. It stays in this browser.
Keep 線性空間 and it comes back until you know it.