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Under Feixian Rock in Longhu Mountain, a Taoist once saw a thunderbolt split a thousand-year-old jujube wood on a thunderstorm night, and a cicada-shaped thunder pattern condensed in the wood core. It happened that a meteorite fell into the Luxi River, and the silver paste penetrated into the thunder pattern, turning into a "silver cicada that sings in the sky". The high-level master of the Zhengyi School tempered this cicada with the secret mantra of the "Beidou Sutra", tied it with five-color silk threads on the red rope of the century-old altar of the Tianshi Mansion, and attached it with cinnabar beads from the alchemy furnace of the Gexian Temple. According to legend, during the Guangxu period, a student from Jiangxi named Zhang wore this necklace to the provincial examination. His essay shocked the audience and was praised as "the green cicada broke the scroll, and its cry moved the nine heavens". Since then, the "Dengke Ling" has become a secret magic weapon for students.
This order is actually a condensed military strategy for imperial examinations. When the silver cicada has been dormant on the wrist for seventeen years and finally flaps its wings to split the sky the moment the scroll is opened, it is the Qingyun Contract composed by the thousand-year-old Taoist tradition and the contemporary youth.
