The Classic of Mountains and Seas says, 'On Mount Li'er, there are many trees called Jiang and Li. These trees have square stems and round leaves, yellow blossoms with fine hairs, and fruit resembling selected grains. Consuming them prevents forgetfulness,' implying that the fruit of the Li tree enhances memory and treats forgetfulness upon consumption.
Due to this unique effect, every time midterms or finals approach, the 'black market' among students on Buji Island is always rife with sellers of these small fruits, and the demand consistently outstrips the supply.
However, the effects of the Li tree flowers are completely opposite to those of its fruit, causing significant damage to memory.
