It's just that China has a profound wine culture, because some calligraphers in ancient times had an indissoluble bond between calligraphy and drinking because they liked drinking. In the history of calligraphy, there even appeared a famous drunkard calligrapher like "Zhang Dian drunk Su".
However, sometimes drinking a little wine may be a little drunk, which may be helpful for artistic creation. However, depending on people, many calligraphers do not drink alcohol.