Is there a word "as healthy as a pen"?

There is a saying called "as healthy as a pen".

"Send my nephew Huai Su to serve in his hometown."

Qian Qi in Tang Dynasty

Release my family's treasure and I'll have a rest. It's great to be able to translate the words of Brahma, and it's great to be Anh Thu. ?

A distant crane has no companion, and a lonely cloud has no delivery. Crazy enough to despise the world, really drunk. ?

Fei Xi has been away from home for a long time. He would rather be close at hand than be happy. Therefore, the pool is full of residual snow, and the cold willows are sparse. ?

Shoujiu still has medicinal flavor, but fish is not recommended for breakfast. Knowing Zen from afar is enough to keep a healthy pen at home.

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Master, you are the pride of our family. You are smart enough to translate Indian Buddhist classics, and your calligraphy has won the essence of Zhang Xu. Flying cranes have no companions to chase, and lonely white clouds float in the vast space. You have been single for a long time. When you write wild grass, there is no space-time universe in your eyes, and dancing after drunkenness can better show the true meaning of the world. You left your hometown and traveled around the world for too long; How happy it is for your relatives to visit your hometown at the beginning of the twelfth lunar month. The pond in your hometown is full of residual snow, sparse wicker and misty rain. You celebrate your birthday, cook soup and take medicine, be a vegetarian in the morning, and take care of your parents. I am thousands of miles away, and I know that besides chanting, you are still at home, writing poems and living in seclusion.