I Have Time to Adjust the System at the Beginning

Chen Dao traveled through time in the body of a wealthy young man. In his previous life, he suffered from food poisoning and failed to save him. In the different world Chendao obtained a time adjustment system, which can adjust the time limit of all things. Chen Dao used the system to greatly increase his cultivation level and entered Huangwu Academy. After training in Huangwu Academy for a period of time, his cultivation level was too high and he was sent to Xuanwu Academy. He met her sister Chen Suyan. Chen Suyan was an inner disciple. Chen Dao worked hard to overcome various difficulties and became a generation. What should I do if the elixir expires? Don't be afraid! I can go back in time for elixirs, and I want all your expired elixirs! What should I do if my practice is too slow? Don't be afraid! I can adjust the time of practicing the exercises back five years, and the exercises will be completed immediately! What should I do if my body is injured? Don't be afraid! I can review the state of your body and restore your body to the way it was before the injury. Return to another world and find yourself a loser? Don't be afraid! I can modify the timeline of everything! Genius!