There were many grasses with four leaves, but oxalis that mutated from three leaves were not so easy to find; the vast majority sold on the market were not Four-leaf Oxalis.
Just as Xiao Zhuo had said, the chances of coming across this Four-leaf Oxalis were indeed slim; otherwise, the market wouldn't replace them with other grasses.
However...
Looking at the clump of oxalis in front of him, most of which were four-leaved, Zheng Tan's feelings were complicated.
Zheng Tan felt that if those students outside knew about this, they would definitely come over and pluck this clump clean. No wonder there weren't many plants grown here yet the door to the greenhouse was always securely locked. Apart from the reasons concerning the greenhouse itself, Old Man Lan must have also known about these oxalis.
Zheng Tan lifted a paw and flicked through the oxalis, secretly criticizing in his heart, when he suddenly noticed a peculiar individual.