There are two types of land use rights: sale and grant.
A sale is when the Celestial Sect mechanism sells it off and receives fiscal Good Deed Points. A grant refers to gifting it for use, typically as a policy support to attract investment, or to lure senior cultivators or large factories to establish their operations.
As the renowned top Rank-2 Foundation Establishment cultivator in the Celestial Sect, Chen Mobai has the maximum policy support permitted from Qin Baipeng now that he's settled in Red Sandstone City.
With Qin Baipeng's personal help, Chen Mobai soon obtained the right to use this plot of Flame Poison Wasteland, but the duration of this right was tied to him.
If one day he decides to relocate, this land use right will become invalid.
Originally, Wu Shangru was also tied down to Red Sandstone City in this way, but in the end, he found Chen Mobai to take over, thus securing a satisfactory resolution.