It could have been Tianyuan!

The so-called Tianyuan, in fact, is a black spot in the middle of the chessboard, which is the center of the chessboard.

As everyone who can play Go knows, to put it plainly, Weiqi is actually a place occupied by enclosure, but for space occupied, there should be sequence. The corner of the chessboard is the easiest to play live chess, followed by the edge, and the last is the mid-abdomen.

Therefore, whether it is a novice in chess, or a master in chess, all start by grabbing corners. It's like the three or three routes of Shangguanyu's opening. It's the usual way to play...