Sign in for 300 Days and I Will Be Invincible in the World

An energy called X factor suddenly appeared on Blue Star, and Meng Bai obtained the sign-in system. On the first day of signing in, you will receive the heaven-level energy guidance technique. On the second day after signing in, I received the Foundation Establishment Pill, which is known as the strongest foundation. … Sign in for a hundred days and get the supreme holy weapon. … Sign in for two hundred days and get the light of immortality. … After signing in for three hundred days, Meng Bai became invincible. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.