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During the Warring States period, Shang Yang initiated reforms in the State of Qin with the support of Duke Xiao. After the new laws were promulgated, Shang Yang wanted to ensure that people would believe these laws would be strictly enforced.
He had a wooden pole, over three zhang (about 10 meters) tall, erected at the south gate of the capital. He announced that whoever could move this pole to the north gate would be rewarded with fifty gold coins.
A brave and strong man successfully moved the pole and was indeed given the fifty gold coins. From then on, people believed that Shang Yang always kept his word and began to abide by the new laws.

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Open the tool →徙木为信 (xǐ mù wèi xìn) is a Chinese idiom (chengyu) meaning “to establish credibility by keeping one's word”.
徙木为信 is pronounced xǐ mù wèi xìn in Mandarin Chinese.
Literally, 徙木为信 means “moving a log to establish trust”. It is used to mean “to establish credibility by keeping one's word”.
徙木为信 comes from a classical Chinese story dating back to ancient China. The full story is on this page.
徙:迁移;信:信用。指说到做到,言而有信