legal ground
Article 443rd of the Civil Code of People's Republic of China (PRC).
Where a fund share or equity is pledged, the pledge right shall be established at the time of pledge registration.
After the pledge, the fund share and equity shall not be transferred, except that the pledgor and the pledgee reach an agreement through consultation. The pledgor shall pay off the debts in advance or deposit them with the pledgee with the proceeds from the fund share and equity transfer.