"Xinghe, you have a really good memory. The ordinary seven-star grass is indeed pure green, but this one grows in the crevices of the shady rocks. After harvesting moonlight for hundreds of years, its medicinal properties have mutated and become a top-grade one. This one is as good as a hundred ordinary ones." Chu Mingyuan's voice was gentle, and he patted his son on the shoulder, "When I get back, I will teach you how to use it with 'Ningshen Powder', so that scholars will never forget it."