Only Using the Three Realms Swordsmanship in a Romance Fantasy Novel

Many people say that when you first learn the sword, three sword techniques are enough.

Horizontal cut, vertical cut, thrust.

These three sword techniques, also known as the Three Basics Sword Techniques, are used as a basic sword technique and as an element to move on to the next level.

However, some say:

Everything about swordsmanship is enough with these three.