BÄ guÃ zhÇ ng means `` eight trigram palm , '' according to the trigrams of the Yijing ( I Ching ) , one of the canons of Taoism . BÄ guÃ zhÇ ng literally means `` eight trigram palm , '' referring to the trigrams of the Yijing ( I Ching ) , one of the canons of Taoism .