My Apprentice: Game over again!

Revered as the most powerful person in cultivation, Grand Master Yu Yan eventually took on an apprentice after waiting for over 16,000 years. He offered careful instruction and protection to her, but she died in the end. Then, Yu Yan took another one as his apprentice, with great instruction and protection, but she died as well! After that, he took on one another, and finally ... she died! Why it is Yu Yan who is always picking up the same reborned apprentice!