The action of magmatic hydrothermal solution. Time-related veins are often associated with gold deposits, and gold is easy to enrich. After many times of tectonic evolution and the intervention of other factors, the gold deposits in the timely vein gradually reached the industrial grade. Time-dependent vein-type gold deposits turn red due to the influence of magmatic hydrothermal solution, which leads to the change of quartzite medium and turns red.