To switch to a different profession or field of work later in life, without having been formally trained for it from the start; literally, to become a monk or nun after being involved in secular life for a long time.
他原本是名工程师，后来半路出家，改行做了厨师，现在开了一家很受欢迎的餐厅。
He was originally an engineer, but later switched professions and became a chef, and now runs a very popular restaurant.
Era:
Ancient
Frequency:
Story:
During the Song Dynasty, Emperor Taizu, while offering incense and paying homage to Buddha at Haotian Temple, was besieged by Liao soldiers. General Yang Lianggong led his seven sons to rescue the emperor. Three of his sons died in battle, and one went missing.
Later, during a campaign against the Liao, the Yang family was framed by Marshal Pan Renmei, and only Yang Liulang survived.
On his way back, Yang Wulang, who had become a monk after an earlier defeat, stepped forward to save Yang Liulang.
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