The cicada shedding its shell was a simple strategy in theory, but actually carrying it out was somewhat difficult.
Originally, Uchiha Yue had prepared two plans to infiltrate Sunagakure directly from the front lines. The first plan went without saying: he would use Falling Moon Style: Shatter Step under the cover of the pitch-black night to sneak directly into Sunagakure. However, even Uchiha Yue did not think such a plan could succeed outright. After all, this was the frontline defense of Sunagakure, one of the Five Great Shinobi Villages!
Therefore, when Uchiha Yue felt that his first plan might fail, his second plan was quietly completed. At the time, he intended to first use Falling Moon Style: Shatter Step to try infiltrating Sunagakure under cover of night. If the Sunagakure ninja discovered him, he would fight them first, then use the cicada-shedding-its-shell method to remove their vigilance before secretly entering Sunagakure.
Just like now, after killing more than ten Sunagakure ninja, Uchiha Yue used the corpse of one of them to replace his own body, pretending that he had been killed by the Sunagakure ninja. Moreover, Uchiha Yue's preparations had been extremely thorough. Almost the instant he switched the bodies, he disguised that Sunagakure ninja's corpse to resemble himself and placed it on Sunagakure's front lines.
Earlier, because Uchiha Yue had slaughtered more than ten Sunagakure ninja, the guards stationed on the front lines were likely flustered and overwhelmed for a while. Now that Sunagakure had been attacked, how much time would those Sunagakure ninja have to identify the face of an enemy ninja?
And even if those Sunagakure ninja discovered that the enemy ninja they had killed was not Uchiha Yue at all, it would already be too late. Uchiha Yue had long since entered Sunagakure while they were