(Regarding the secret technique issue, the author has already marked all secret technique Ranks when the protagonist first created the secret techniques. Let's just reiterate them now, Secret techniques from lowest to highest are divided into:
Unranked, ----->Ordinary Immortal, ----->Top-tier
Immortal, ----->Pinnacle Immortal, ------> Ultimate Immortal
Universe Venerable Ordinary, ----->Top-tier, ----->Pinnacle, Ultimate
Universe Overlord Ordinary, ----->Top-tier, ----->Pinnacle, ----->Ultimate
Universe Master Top-tier, ----->Pinnacle, ----->Ultimate, -----> Strongest, ----->Fusion Strongest
Among them, Ultimate ultimate techniques from Immortal to Universe Overlord belong to super-supreme-tier secret techniques, equivalent to a higher Rank secret technique. For example, Universe Overlord Ultimate is equivalent to Universe Master Top-tier.)
A more Detailed Explanation:
Level of Techniques
Low
Low level (不入流绝学) techniques are generally created by normal World Masters and Ordinary Immortals.
Normal
Normal (普通绝学) techniques are generally created by World Master geniuses and Marquise-level Immortals. They generally have some special features that make them surpass Low level techniques.
Top
Top (顶级绝学) techniques are generally created by World Master absolute geniuses and King-level Immortals.
Pinnacle
Pinnacle (巅峰绝学) techniques are generally created by King-level Immortals with real chances to become Universe Venerables, as well as Universe Venerables. Extreme World Master geniuses can also create techniques of this level.
Ultimate
Ultimate (究极绝学) techniques are generally created by Universe Overlords and Universe Masters. Only the greatest World Master geniuses can create techniques of this level.
Universe Venerable Pinnacle
Universe Venerable Pinnacle (宇宙尊者巅峰绝学) techniques are generally created by talented King-level Immortals and Universe Venerables.
Universe Venerable Ultimate
Universe Venerable Ultimate (宇宙尊者级究极绝学/宇宙尊者究极绝学) techniques are generally created by very talented Universe Venerables, Universe Overlords, and can be casually created by Universe Masters.
Universe Overlord Ultimate
Universe Overlord Ultimate (宇宙霸主究极秘法) techniques are generally created by very talented Universe Overlords and Universe Masters.
Universe Master Pinnacle
Universe Master Pinnacle (宇宙之主巅峰绝学 /宇宙之主巅峰级秘法/宇宙之主巅峰秘法) techniques are generally created by very talented Universe Overlords and Level 1 Universe Masters.
Universe Master Ultimate
Universe Master Ultimate (宇宙之主究极秘法) techniques are generally created by Universe Masters of Level 2 and higher. Supremely talented Immortals can create techniques at this level.
Universe Master Strongest
Universe Master Strongest (宇宙之主最强秘法) techniques are generally created by Universe Masters of Level 4 and higher, but can also be created by talented Universe Masters of lower levels. Supremely talented Universe Venerables can also create techniques of this level.
Universe Master Strongest Fusion
Universe Master Strongest Fusion (宇宙之主融合最强秘法) techniques are generally created by Universe Masters of Level 5 and higher, but can also be created by talented Universe Masters of lower levels. Supremely talented Universe Venerables can also create techniques of this level.
Universe Master Fusion Masterstroke
Universe Master Fusion Masterstroke (宇宙之主融合绝招) techniques are generally created by Universe Masters of Level 5 and higher, but can also be created by talented Universe Masters of lower levels. Supremely talented Universe Venerables can also create techniques of this level.
True God
True God or Universe Supreme Master techniques are generally created by True Gods, but can also be created by the most supremely talented Universe Venerables and extremely talented Universe Masters. A technique is considered a True God-level technique when it reaches the top of Level 6; True Gods can easily create Level 7 and Level 8 techniques, elite True Gods can create Level 9 techniques, and only the strongest True Gods can create Level 10 or higher techniques.