Davis thought about his odds of gaining entrance to the inheritor's tomb without eating the Inflamed Kirin Cherry Fruit and recognized it could be less. However, since he possessed the Blazing Thunderlight Kirin's Firestorm World Ode and the Blazing Thunderlight Kirin Immortal's authentic soul mark, he mused that he more or less had some chance to successfully retrieve the three drops of blood essences.
Since he had the requirements, he could storm the tomb, but he also felt that he lacked the strength in case if he was going to be subjected to harm.
From Isabella and Shirley's case, he understood that inheritors were capable of reaching four levels higher or three levels higher at the very least as long as they didn't screw up in their cultivation journey and this inheritor seemed to have successfully ascended, which meant this inheritor's tomb shouldn't be certainly looked down upon.