I kept silent.
He laughed: writing calligraphy and cutting rice paper, business cards and blades are better. In terms of sharpness, a knife can't compare with a business card. However, it depends on where it is used. Xuan paper is characterized by its softness. Cut with a blade, and be careful, sharp blades can easily scratch rice paper. The business card is not. Harder and thicker than rice paper, but without blades. Using it to cut rice paper will never hurt rice paper unless it is intentional. The cutting edge of rice paper does not need to be so neat, and the effect is better with a little burr. Therefore, I like to cut paper with business cards.
With that, he immediately handed me a cup of kung fu tea.
Business cards and rice paper are similar in temperament and easy to communicate. It's like mediating the contradiction between family, friends and lovers, and there is absolutely no need to take extreme measures. The extreme way is like a blade, which seems to be easy to solve contradictions quickly, and the result is often counterproductive. The contradiction has not been resolved, but it hurts feelings.