With a creak, the stone house at the end of the bluestone path opened, and a young boy walked out.,He strode to the west side of the courtyard, crouched down, and pinched a leaf of a spirit-glow herb near the stone wall with two fingers. He carefully flipped it over on its back.,After all, the origin of the black thread is unknown, and Lu Xuan doesn't know how it corrodes the spirit glowing grass. It's okay if it works after pulling it out, but what if other spirit glowing grasses are still unavoidable from being eroded That would be heartbreaking.。