Chya

Chya was the realization of a Toa of their place in the universe, their destiny, and a few other philosophical answers.

Philosophy
Many Toa failed to reach Chya, mainly because it required intense meditation to understand. A Turaga could transform from a Toa without Chya, but their quest for knowledge and wisdom would never be complete without it. Unlocking Chya was said to be the ultimate satisfaction. Even if one realized their destiny was a trash sweeper, they would be content knowing they could carry out that destiny without the need to advance higher on the totem of life.

In many cases before an unknown Toa's meditation, most Toa actually reached Chya unknowingly. Vintao struggled to understand it during his role in the rebellion against the Jacidax Lordship, knowing the consequences of not learning it were dire.

A Matoran could reach Chya, but it was harder because it required intense concentration. Some Matoran dedicated a large amount of time to meditation towards Chya, but after the Lordship came to power, meditation was banned, as it went against Lordship ideals, was known to sometimes reduce productivity, and it would teach many Matoran to rebel.

Trivia

 * Chya is based off the Buddhist concept of Enlightenment.
 * Chya was sometimes called the "fourth virtue".