1, meaning: it looks simple but actually beautiful, and it looks thin but actually full. 2. Source; Su Dongpo commented on Tao Yuanming's poems: "His poems are rich in quality, reality and reality." (The one with Su Zhe's book) added: "Yuan Ming's poems are slow at first glance, but they are strange when they are ripe." It means: Tao Yuanming's poems, seemingly simple, are actually rich in literary grace in simplicity, seemingly tasteless, but actually full of charm in lightness.