"The sword front comes from sharpening, and the plum blossom fragrance comes from bitter cold" comes from the diligent article of Warning the Sage.
"Broad vision, many a mickle makes a mickle, but thin" comes from Su Shi's article Jia Shuo Ji.
Try to climb to the top of the mountain: it dwarfs all the peaks under our feet. This sentence comes from Du Fu's famous sentence "Looking at Yue"