The mythical Jin Chan lives on the moon, and these charms symbolize wishing for that which is "unattainable". This can be interpreted as attracting good fortune to the charm's holder, or that the attainment of money can lure a person to their downfall. Chinese charms depicting illustrations and subjects from the "I Ching" ( "The Book of Changes") are used to wish for the cosmic principles associated with divination in ancient China, such as simplicity, variability, and persistence. Bagua charms may also depict the Bagua (the Eight Trigrams of Taoist cosmology). Bagua charms commonly feature depictions of trigrams, the Yin Yang symbol, Neolithic jade cong's (琮), the Ruyi sceptre, bats, and cash coins. Book of Changes and Bagua charms are alternatively known as "Yinyang charms" (Traditional Chinese: ) because of the fact that the "taijitu" is often found with the eight trigrams. This is also a popular theme for Vietnamese numismatic charms and many Vietnamese versions contain the same designs and inscriptions. Five poisons talismans (五毒錢) are Chinese charms decorated with inscriptions and images related to the fifth day of the fifth month of the Chinese calendar (天中节), the most inauspicious day according to tradition. This day marked the start of summer which was accompanied with dangerous animals, the spread of pathogens through infection and the alleged appearance of evil spirits. These animals included those known as the five poisons (五毒): snakes, scorpions, centipedes, toads, and spiders. These are often depicted on five poisons talismans, or possibly with lizards, the three-legged toad or tiger. The ancient Chinese believed that poison could only be thwarted with poison, and that the amulet would counter the hazardous effects of the animals displayed. An example of a five poisons charm bears the legend "五日午时" ("noon of the 5th day"), and the amulets were commonly worn on that day. The Eight Decalitres of Talent charm is a Qing dynasty era handmade charm with four characters. The rim is painted blue, the left and right characters are painted green, and the top and bottom characters are painted orange. The inscription "bā dòu zhī cái" (八鬥之才), which could be translated as "eight decalitres of talent", is a reference to a story in which Cao Zhi struggled with his brother Cao Pi, under the belief that he was oppressed out of envy for his talents.