I Use the Internet to Protect the Country

The soul of the world's number one hacker "King" accidentally traveled to Chen An. After regaining his new life, he still looks like a wasted student who repeatedly failed his exams. When a foreign super-level hacker witch manipulates the city's smart systems and goes on a rampage, putting the financial lifeline at stake, Chen An is forced to take off his disguise, take on the responsibility in the crisis, and use fingertip codes to build the Great Internet Wall to defend the country.