Traveler Without Plug-Ins

As a time traveler, Henry Zhang felt that he might be an accident. If there was a reason - he had no plug-in. There is no old grandfather, no mysterious skills, no heaven-defying holy martial arts, and no special bloodline. The only thing that can be called a plug-in is that he is a time traveler, that's all. In this world illuminated by spiritual flames, how can a helpless time traveler become stronger step by step?