Where does bamboo come from?

It was first in treading on thin ice. I specially checked the years of freehand brushwork and step by step, and step by step was two years earlier.

I saw another poem on the Internet:

Empty bamboo festival, empty and unintentional.

stand upright and live without any dust.

when the wind blows the bamboo, the bamboo leaves float in the rain.

the bamboo stands tall and straight, and it is intentional to laugh and watch.

no intention or injury, no injury, no fall.

I have no desire or desire, and everything goes according to the weather.

The reason for this is related to Li Shutong (Master Hongyi).

The first half of the sentence is based on a couplet in Qianlong period: "Bamboo is unintentional, and branches and leaves are born outside the festival."