The most difficult tongue twister is five words.

The first one: good rice for bad rice, mounds of potato legs, green carp donkeys, cowherd in love with Liu Niang, cow face with butter, Liu Niang in love with cowherd.

The second type: fertilizer will volatilize, black hair is fat and gray, and gray is fat and black. The bottle can't compensate the basin, and the basin can't compensate the bottle. The monitor is in charge of the class and the doorman asks the doorman.

The third kind: five trees on the mountain, five pots of vinegar on the shelf, five deer in the forest and five pants in the box. Cut down the trees on the mountain, take off the vinegar on the shelf, kill the deer in the forest and take out the pants in the box.

Fourth: the school flower likes Hua Pang, Hua Pang doesn't like the school flower, and Hua Pang always jokes about the school flower.

Fifth: two geese cross the river together by the river; White geese eat grass and black geese build nests. The north wind blows in winter, and the grass nest is really warm. Live in a grass nest, oh, oh, sing a song.