C623 Zhang 624's Way of Treating Guests

While flying, Zi Yun turned his gaze to his Immortal Sand. Although his cultivation had improved a lot, the Immortal Sand had never made any obvious progress. It seemed like he had some time to research and refine it to strengthen its ability. He wanted to see if he could transform into a sand robe and wear it on his body, just like a Fire Clothes. Flying around would be much more convenient