legal ground
Article 425 of the Civil Code
In order to guarantee the performance of the debt, if the debtor or a third party transfers his chattel to the creditor for possession, if the debtor fails to perform the due debt or realize the pledge according to the agreement of the parties, the creditor has the right to be paid in priority for the chattel. The debtor or the third party specified in the preceding paragraph is the pledger, the creditor is the pledgee, and the delivered movable property is the pledged property.
Article 22 of the Measures for the Administration of Equity Incentives of Listed Companies
The term "restricted stock" as mentioned in these Measures refers to the shares of the company whose rights such as transfer are restricted according to the conditions stipulated in the equity incentive plan. Restricted shares shall not be transferred, used to guarantee or repay debts before the lifting of the ban.