In Jianghu 2, characters have multiple skill slots, but the fourth skill is not available from the start. It needs to be unlocked and obtained, which is why many people haven't activated the fourth skill yet. To help everyone understand how to unlock the fourth skill in Jianghu 2, the following will explain the unlocking method, providing a guide on skill unlocking.

Regarding the method of unlocking this skill, to unlock the fourth skill, you need to upgrade your identity level, specifically to the rank of Ink Master for the designated character. To do this, you must complete identity-related tasks, which are limited daily. Completing these tasks grants a fixed amount of experience points, though the amount is not very high.

This means that it will take a considerable amount of time to accumulate enough experience for the upgrade. After becoming an Ink Master, you also need to follow the prompts to find someone from Longshe Fort. Here, you will see an NPC; after conversing with this NPC, the designated character can complete the promotion, and the fourth skill slot will then be unlocked.

If the level requirement is met during this process, you can learn the fourth skill. If the level has not been reached, the slot will remain empty. This is the entire process for unlocking the skill. As you can see, it's not overly complex, involving only a few steps, but the total time required is quite long.

Given that a single character has many tasks to complete, which cannot be done in just a few days, unlocking the fourth skill for all characters will certainly take at least several dozen days. Thus, the cycle is very long, requiring a lot of patience to unlock everything.

The above covers all the content about how to unlock the fourth skill in Jianghu 2. After reading the introduction above, I believe everyone now understands how to unlock the fourth skill. Once you know how to unlock it, you can proceed as described to unlock the fourth skill.