Who wrote the calligraphy behind the scenes?

Most of those calligraphy were written by the crew looking for calligraphy lovers, and the prototype was Que Ning. Some of them were written by Chen Feiyu himself.

The historical prototype of Wang Shusheng is Wang Xizhi, and the place where Wang Shusheng lives in the play is called "Mo Chi Garden", which naturally reminds people of Wang Xizhi's "Xiyan Lake". Under multiple combinations, it can be proved that Wang Shusheng is really based on Wang Xizhi.