There are many ways to play the game of Black Cat Strange News Agency. Many of them don't know how to upgrade the shadow files in the game. Let's take a look with Bian Xiao, hoping to help you.

Strategies for upgrading the shadow files of Black Cat Anecdote Society

1: upgrade method, we can get the corresponding materials through various channels in the game, and then use these materials to upgrade the trace files;

2. If the materials are available, you can get hard-trace materials in the rumors, such as the rumors of Wonders in Fog City, the materials of shadow upgrade, gossip rumors, and hodgepodge rumors.

You can also get it by working in the city. Click the exit button in the interface to enter the foggy city, and each building corresponds to a resident;

4. For example, in the library, you will be prompted to select the observation type to work. You can get certain props or materials after work, and different places get different rewards.