1. The characters beside the arrow characters: short, knowing, short, yi, short, short, straight, corrected, 矱, 矧, corrected.
2. Ya, the second commonly used word in Chinese, pronounced sh ǐ, was first seen in oracle bone inscriptions. Its original meaning was an arrow with two balanced feathers at the tail, which was later extended to the meaning of invariant line, directional, unswerving, straight, upright, and upright.