What kind of calligraphy is this? ! Thank you.

The official script banner "All rivers run into the sea",

The fine print goes from right to left, "All rivers run into the sea, and if you have no desire, you are just".

The running script is signed "The Sea of Clouds in Summer in Wu Jia"

Judging from the basic structure, the characters in the banner are official script, which has the elegance of official script Cao Quanbei, but it is mixed with some strokes of seal script. The shape of the snake head with three vertical strokes in Sichuan is particularly obvious, and the strokes seem to have some origins with the seal script of Wu Rangzhi, a calligrapher in the Qing Dynasty. The style of official script is easy to be new, but difficult to be good. From this work, the reading style is free and easy, and the meaning is fresh. The screenwriter is sincere and has certain strength.

Small print has the flavor of Han bamboo slips.

Please refer to the words of your family.