Three years after she married into the Xue family, she received a lot of cold treatment. However, she turned around and became a secret emissary appointed by His Majesty himself. He is stationed in the northern border and is the sharpest knife in Daliang, but he blocks poisonous arrows, carves wooden hairpins, and breaks into wedding halls for her. From Kyoto to the border, from forbearance to side by side, let's see how this pair of evenly matched people guard the mountains and rivers with their bodies, and grow old together with their hearts as evidence.