During the Tribulation Period, My Ancestor Took Me to Cultivate Immortality in the City

Three hundred years ago, in the Huaxia Kingdom of Blue Star, archaeological experts unearthed an ancient book in an ancient tomb. After experts deciphered the text, it was discovered that what was recorded in the book was actually a technique for cultivating immortals. The top brass of the Chinese nation decided to allow a very small number of people to practice this technique. Three hundred years have passed, and most of the people who participated in the cultivation have broken through to the foundation-building realm, and one of them is even more gifted, and his cultivation has reached the golden elixir realm. This person protected the peace of China for three hundred years. Until one day, the spiritual energy on Blue Star revived, and a mysterious teleportation array appeared in the territory of China. This Jindan realm powerhouse entered the formation and was transported to a different world. There, he found that the local people's cultivation was beyond imagination. He was soon discovered by people from another world and hunted down. He finally escaped back to the teleportation array and returned to China. He then destroyed the teleportation array. However, this teleportation array will automatically open once every three years. Once it is opened, aliens from other worlds will enter the Blue Star through the teleportation array and enslave everyone on the planet. In order to prevent such a tragedy from happening, the top leaders of the Huaxia Kingdom decided to open up the immortal cultivation method to allow all people to participate in the practice. At this juncture, Chen Xiong was admitted to Zhonghai University and accidentally activated the jade pendant on his chest...