Of course, for Shuzhen, this is just routine, without a hint of difficulty.
Just by standing in front of the corn and silently activating her superpower, the corn cobs, already filling with grain and about to mature, turned yellow and hard at a speed visible to the naked eye, advancing from tender white to golden. Maturing twenty days early was no problem at all.
With the thought that more grain meant more food security, Shuzhen also quietly used her powers to make these corn cobs a bit larger and thicker. The small seeds at the tip, which typically didn't grow, matured fully, while the secondary cobs, which usually had seeds growing on only one side or didn't grow seeds at all, were made robust and full with her help.
Not a small amount, in the front and back gardens, a quarter acre of land was worked up by her to yield at least an extra two hundred pounds of corn kernels.