What should I do if I can't get the stone out of the ice cave?

When I went into the frozen ice to look for the old man, I learned that if I want to go to the cave of ice and snow, I must first go to the nine snowmen at the entrance of the ghost fog ice forest to open the office. The order is southeast, northwest and middle, there is nothing wrong. Time goes forward, the clock doesn't turn back, and there is a menu on the right window-seafood hodgepodge (Yamei is required to be in the team).

First enter the ghost fog ice forest and investigate the snowman in order. Up north, down south, left west, right east, the sign next to it says 1: 00 to start working, and the clock points to the upper right corner, so first choose right, down, left, up, middle, and then choose right, right, left and left clockwise, that is, turn on the mechanism.

Go to the frozen cave, and the stone in the way has disappeared. The rare monster is the ice king sword spirit demon. From the cave of ice and snow, enter the upper right side of the cave of ice and snow, investigate the opening mechanism of trees, find the treasure chest in the cave of ice and snow, defeat the girl who guards the ice and snow, and get the clear sound beads and sacred blessings.