The Immortal Who Was Banished in the Early Tang Dynasty

Internet celebrity Kong Xiao returned to the Tang Dynasty with his own studio and became the disciple of Qingxiazi of the Danding Sect, the only relegated immortal in the world... He said that there should be light, and there was light with a wave of his hand; he flew into the sky and escaped into the sea with various fairy weapons; he could see thousands of miles and transmit sounds from thousands of miles; he brought people into illusions with a wave of his hand; he summoned heavenly soldiers and generals to descend to the mortal world. While everyone in the Tang Dynasty was marveling at the magical powers of the banished immortals, Kong Xiao was looking at the other equipment in his studio besides computers, mobile phones, VR, and AR and making calculations. "What can these things be used for?"