Eight GatesRock Lee, Guy's student, was taught how to open some of the Eight Gates by Guy. During Part I, he's able to open the first five gates. By Part II, he's able to open the sixth gate. By adulthood, Lee had mastered all eight gates.
Eight Gates (八門, Hachimon) is a jutsu that releases limiters inside the body to access incredible power....Eight GatesManga DebutVolume 2, Chapter 8Anime DebutEpisode 4Game DebutNaruto SD Powerful Shippūden
No he didn't. Releasing the 8th gate or the Gate of Death gives substantial power but will release in the death of the user. Might Guy is the only character who released all the gates and survived (thanks to Naruto's Chakra).
Since his debut, Rock Lee has managed to surpass quite a few characters, which is incredible seeing as he possesses literally zero skill with ninjutsu and genjutsu. This lack of skill is the reason why he focused solely on taijutsu with the help of Guy who taught him everything he knew, including the Eight Gates.
After Might Guy uses Eight Gates Released Formation, he is saved from death by Naruto Uzumaki's Yin–Yang Release. However, damage done to his leg from using Night Guy leaves him wheelchair-bound for the rest of his life.
In fact, only five members of the Konton Clan have it, Saru being one of them. The Kekkei Genkai is essentially a Taijutsu technique, very similar to the Eight Gates....This article, The Ninth Gate, is property of KontonMan.The Ninth GateNameMovieNaruto: Story of the SageAppears inMovieData
The Eight Gates (八門 Hachimon,"The Eight Inner Gates") are eight specific points along the chakra circulatory system that limit the overall flow of chakra within a person's body, which enables the body from expiring too soon.
Although Guy can no longer tap into the true power of the Eight Inner Gates, he's certainly strong enough to open one gate, at least. The First Gate, also known as the Gate of Opening, removes the mental limiters of the user. Kakashi Hatake has been seen making use of this gate during his cliff climbing practice.
When Tsunade, a Konohagakure medical ninja, returns to lead the village as the Fifth Hokage, she offers to operate on him. Despite the procedure's fifty percent chance of failure, Guy encourages Lee to have the operation. Ultimately, Lee undergoes the surgery, which succeeds in healing his arm and leg.
Metal LeeYears after the war, Lee marries an unknown woman and has a son named Metal Lee. In the epilogue, Lee is last seen many years later, training with his son. In Boruto: Naruto the Movie, Lee hosts the third stage of the Chunin Exam.