Lin Xiangru was a politician and general of the Warring States period, who served the state of Zhao. He figures prominently in two stories of the period, namely the episode and the namesake chengyu of "Returning the Jade to Zhao", as well as the story and the namesake chengyu of "Carrying Thorned Grass and Pleading Guilt".

The Heshibi, often translated as Mr. He's jade, was a sacred ceremonial bi which had an important role in Chinese history. First appearing during the mid–8th century BCE, it was cut into a ritual bi and recognized as an imperial treasure. The Heshibi became the object of contention among the Warring States, stolen from Chu circa 4th century BCE, acquired by the Zhao, and temporarily traded to Qin in 283 BCE. When the Qin dynasty was founded in 221 BCE, the Heshibi was carved into the Heirloom Seal of the Realm, symbol of the Mandate of Heaven, and subsequently transferred through successive Chinese dynasties until it was lost during the Five Dynasties era in the 10th century.