The Mecha I Sell Is the Demon God.

When he woke up, Su Ye found that he had traveled through time. I traveled to a place called Canglan Continent, a world where humans have been fighting monsters and savage beasts for thousands of years. The monsters within the same level are invincible. Even the top awakened ones can barely protect themselves against monsters of the same level. But things are different now. A small store called "Mechanical Origin" quietly opened on Xuanwu Street. What they were selling was something that had never appeared in the entire continent - mechas. From the lowest-level mortal-level heavenly soldiers and ghosts to the legendary saint-level mechas, gods and demons are all on the shelves. Mechas are divided into nine levels: ordinary, soldier, guard, school, general, king, emperor, natural disaster, and legend. The heaven sequence includes the legendary ones transformed by Nuwa of the Three Qing Dynasties, the underworld sequence includes the Great Emperor Fengdu and the Ten Palaces of Yama, and the human sequence includes the Three Sovereigns and Five Emperors - the Yellow Emperor Xuanyuan can cut mountains and rivers with one sword, and Hou Yi can set down the sun and moon with one arrow. The natural disaster level has many names that have shocked the past and present - Zhen Yuanzi, Ancestor Minghe, Demon Master Kunpeng, Jade Emperor, Di Jun, Donghuang Taiyi, all are ants under the saints. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.