The horse starts out in a straight line and then it hops off on a diagonal.
马从一条直线出发，然后沿着对角线跳跃。
2
The stem of the "2" does not go up first and then to the right, but immediately starts-off in a diagonal direction.
该干的“2”，并不去了第一次，然后再以正确的，但随即开始起飞，在对角线方向。
3
When two parameters of four-order cumulant function choose values of the diagonal direction and the off-diagonal direction of the matrix and the third parameter is zero, we can get the best matrix.