How to calculate the hit of DT in fantasy westward journey

Dream Westward Journey DT 3 hit is equal to 1 damage. For example, a weapon hit 600,450 damage equals (600 hit equals 200 damage +450 damage, and the total damage equals 200+450=650 damage. )

1 level latecomers cannot be latecomers.

However, the late skill points with a point height of 1 will add 3 damage and 3 hit points, which seems to be 3.3. Because a 3-point hit equals 0.3 damage.