Wu Xiaoru's home had excellent water-irrigated land, with a water ditch running alongside the field cages.
Zhang Xiaoshan poured some Spiritual Liquid into the water ditch, which diluted in the water and then flowed into the fields where seeds had been sown.
He then went to his own family's field. Since his field was farther from the ditch and his brother had dug a well there before his death, they had to use well water for irrigation.
Zhang Xiaoshan poured Spiritual Liquid into the well water.
Then he used his True Qi.
The well water was drawn out, forming a water dragon, then it vaporized above the field and fell like a fine drizzle.
By the time all this was done, it was already daylight.
Even though his True Qi was strong, with all the depletion over the night, he was quite exhausted.
He sat by the edge of the field cage, catching his breath.