After returning to Konoha, Uchiha Ying Yue temporarily pulled himself away from thoughts of traveling the ninja world and began focusing on his training.
The threats and ever-changing tides of the ninja world had made him realize that strategy and planning alone were far from enough. He needed even greater power.
Ying Yue's goals had now become even clearer: to continuously improve his combat strength, especially the Gate of Death of the Eight Inner Gates and various advanced sealing techniques.
Uchiha Ying Yue went alone to a valley outside Konoha. The air there was fresh and the vegetation lush; it was his usual secret training ground.
Training in the Eight Inner Gates was exceptionally difficult, particularly the eighth gate, the "Gate of Death." Opening the Gate of Death would burn away one's life force and vastly increase combat strength, but it also carried enormous risks.
Uchiha Ying Yue knew that his current physical strength was still insufficient to withstand the burden of the Gate of Death, but he believed that with his powerful Sage Body, he could gradually draw closer to that forbidden gate.
Uchiha Ying Yue silently recited in his heart, "Eight Inner Gates, Gate of View... open!" With a low shout, violent chakra erupted from his body, and even the surrounding air rippled under the force of his powerful aura.
The chakra within him flowed like a towering flood, while the meridians throughout his body stretched taut like red-hot iron chains. Though it was painful, Ying Yue remained calm. He closed his eyes, sensing the flow of power within his body as he gradually approached the boundary of the "Gate of Death."
During breaks from training the Eight Inner Gates, Uchiha Ying Yue also studied advanced sealing techniques.
Although sealing techniques were complex, they were not an insurmountable