Actually, there is another advantage to it.
When Zhang Xiaohua first arrived at the Desert Island, he realized the principle of "breaking and then standing". Each time the Jade Blood Alchemy Heart technique was performed, it would consume all the true qi in his body. From another perspective, it was a practice of true qi usage, and each time of exhausting true qi must have strengthened its regeneration, thereby increasing his own cultivation base.
After considering the pros and cons of the technique, Zhang Xiaohua decided to succeed in cultivating the Jade Blood Alchemy Heart technique. He knew that in the present extinction of all laws, he had no other shortcuts to take, and only by cultivating his divine sense extraordinarily strong could he master these formations and prohibitions.
