My filial piety will never change

This book is also known as: "Sun in Xiaoyuan" [pure harem, no cows, full of sugar, stable driving skills]
Traveling to the world of immortal heroes, there are three stunning masters right away? Wonderful!
With the Filial Piety System, you can redeem luxurious rewards for fulfilling your filial duties? Wonderful!
A war is coming in a few years, and everything could be ruined at any moment? Then you must be a filial son!
But why are the ways the three masters look at me becoming more and more strange?
Masters, I am your disciple, not a dual cultivation partner...
(No time to explain, get in the car!