legal ground
Article 30 1
The disposal of * * *' s real estate or chattel, and the major repair, change of nature or use of * * *' s real estate or chattel shall be subject to the consent of * * * owner or all * * * owners, unless otherwise agreed by * * * owner.
Article 3 1 1
In any of the following circumstances, the transferee obtains the ownership of the real estate or chattel:
The transferee is in good faith when accepting real estate or movable property;
(2) Transfer at a reasonable price;
(3) The transferred immovable property or movable property that should be registered according to law has been registered, and the transferred immovable property or movable property that does not need to be registered has been delivered to the transferee.