Ryu felt that this technique was perfect. It was a Mystical Grade technique of the Ice Phoenix Clan. It emphasized great qi control.
The truth was that Ryu didn't have enough Nodes to use this technique and it would be useless to execute it with his soul considering it was meant to build up momentum for him with his body. However, this didn't matter to Ryu as he could use his unique Meridians to make up for the deficit.
The reason why this technique required a minimum number of Nodes was due to the innate danger in using it. Before even getting to the technique, there were several warnings within the jade piece advising against those without confidence against using it.