question: How was Temüjin kept imprisoned by the Tayichi'ud ?
sentence: The Tayichi'ud captured Temüjin ( reportedly with a cangue , a sort of portable stocks ) , but with the help of a sympathetic guard , the father of Chilaun ( who later became a general of Genghis Khan ) , he was able to escape from the ger ( yurt ) in the middle of the night by hiding in a river crevice . [ citation needed ]