Speaking of the saber controlling techniques, it shouldn't be forgotten that Song Shuhang had already come in contact with the 'Temporary Sword Controlling Technique' once.
That technique was a (failed) product of Great Master Profound Principle's experiments that had the objective of lowering the level required to use the sword controlling techniques. Later, Great Master improved the technique and passed it to his disciples so that they could experience how it felt using the 'Sword Controlling Technique' in advance. This way, lower-level disciples could temporarily experience the wonders of the Sword Controlling Technique by using a vocal command, together with an incantation and a hand seal.
However, Song Shuhang felt that experiencing the 'Temporary Sword Controlling Technique' was more similar to just remotely using a flying sword instead of actually controlling it.
