Where did hidden weapons learn to release people from Jianghu?

The learning channels of hidden weapons for scattered people in Jianghu are as follows:

1. No Shadow (3) Chapter 8: You can get it by entering the rear wing and opening the wooden box after customs clearance.

2. Songmo (9) Chapter 23: Killing Tang Uneven (Prudence, Sao Year) and Obtaining.

3. Lingmu (7) Chapter 23: You can get it by killing Tang Liang (65).

4. Place in Jianghu is a role-playing and adventure game with high degree of freedom in martial arts style.