I, the Invincible Dongfang

I've read about seventy or eighty chapters, but I can't stand it any longer. The rest is okay, but my combat power is a mess. In other novels, the protagonist can fight across levels because he has a golden finger, or has heaven-defying skills or adventures, but the protagonist doesn't have it. The skill is the self-created sword-drawing technique (because the protagonist finds it troublesome. He wants to solve the battle with one sword), and he can still surpass the level. The eighth level of innate level is comparable to the late stage of the master. Yan Shisan, who is at the peak of the ninth level of innate level, was killed by the protagonist with a sword. Zhu Wuwu and Shangguan Jinhong, the veteran grandmasters, are not the opponents of the protagonist of the innate level. I just want to ask the author why