[With the contract as the core, Nathan will pay 200,000 ena to alter the time of this plot of land with an area of 40x50 meters by 20 times of acceleration for fifty years.]
[With the contract as the core, Nathan will pay 300,000 ena to alter the time of this plot of land with an area of 3,000x2,500 meters by 5 times of acceleration for fifty years, excluding the one in the previous contract.]
[With the contract as the core, Nathan will pay 200,000 ena to alter the time of this plot of land with an area of 30x30 meters by 10 times of deceleration for fifty years. All three contracts can be renewed or cancelled at any time. Nathan will surrender the right to the remaining ena as compensation.]
