When Will the Journey to the West Return?

Tang Sanzang dismounted his horse and refused to go west, Sun Wukong went up to the sky and waved his baton, Zhu Bajie led his troops to roll up the Tianhe River, and Sha Wujing threw his lamp into the sky. On the horizon, a silver-white divine dragon held a bright pearl in its mouth and emitted billions of rays of light! On the ground, thousands of giant dragons are roaring! But when all is said and done. Why are the four masters and apprentices leading one horse, and then take the long road to the west?