According to the Tai Gang Sword Decision recorded, this sword fusion technique, besides greatly increasing the speed of escape when flying with a sword, also wraps the entire body in sword light because it is infused with the caster's entire mana and vitality. Its power is far beyond what the basic sword flying technique can compare to.
If an enemy is in the nearby void of the escape light, they will be affected to varying degrees. If they forcefully approach, their skin will burst open, and their flesh will split. Therefore, once this technique is used, it serves as both offense and defense to a certain extent.
The only flaw, probably, is that using this technique is like putting all one's eggs in one basket—it's a high-powered valve that consumes too much mana, something Liu Ming cannot sustain for long with his current mana.
Once the attack fails, it's akin to delivering oneself directly to the enemy's hands; thus, it must be used with great caution.