Where did Xu Zhihu go after the skyrocketing?

After Xu Zhihu ascended to heaven, he arrived at Tianmen. After Hong realized the Tao, he went down to the south of the Yangtze River by crane and traveled all over the world with Xu Zhihu. Finally, Xu Zhihu's Shou Yuan will be exhausted. Hong's elephant made a wish to heaven for Xu Zhihu, saying that he would build the right path between heaven and earth for another 300 years, asking Tianmen to open the line and let Xu Zhihu fly high.