The idiom "Surprise the snake into the grass" comes from Xuan He Shu Pu Cao Shu Qi: "If a bird comes out of the forest, it will surprise the snake into the grass."
Someone asked him, "How to calculate cursive script?" Shi Yalou wrote eight words: "Birds out of the forest, frightened snakes into the grass!" " " ...
If a bird comes out of the forest, it will scare the snake into the grass. Metaphor calligraphy is full of elasticity and vitality, full of movement. Words fly out of the forest and snakes rush into the grass.
Idiom. A mixture of dragons and snakes. Source: Dunhuang Bianwen Collection Wu Zixu Bianwen: "Soaps and silks are inseparable, and dragons and snakes are mixed."
Song Shi Daoyuan's record of Deng Chuan in Jingdezhen: "Where saints live together, dragons and snakes are mixed."
"Dragon and snake mixed" means that good people and bad people or capable people and mediocre people are mixed together.
Scared into the grass means cursive script is vigorous and bold.
The original intention of "mixed dragon and snake"; Dragons and snakes live in mixed communities.
[startle] original intention; People walk at night and beat the road with sticks, scaring the snakes on the road into the grass beside the road to prevent them from biting themselves.