According to the family records of the past few thousand years, being able to compress the time to grasp the basics of a law within a month without any auxiliary items, relying solely on the Dragon Spine Secret Realm, one can be considered rather talented.
As for twenty days, that talent is absolutely astonishing.
It is known that Song Chi himself took 34 days to get started with the help of one intermediate Space Attribute Law Crystal.
Balancing the Law Crystal with the difficulty of Space Law Comprehension, it means, had he not used any assistance for comprehending ordinary laws other than space and time, the approximate time would actually be around 34 days, and compared to 20 days, one can imagine the disparity.
Thinking of this, Song Chi looked at Song Hao before him with a kinder gaze, he had an intuition that this young man had a high probability of being selected for the family's next generation rank.