C679 Calculating It

Shea Hao wiped the dirt off the plate. Very quickly, the entire Eight Trigrams Disk was revealed in front of Shea Hao.

The material of this Eight Trigrams Board was not ordinary iron or copper. It was a material that Shea Hao could not tell what material it was made of.

However, Shea Hao could still tell one thing.

This Eight Trigrams Disk was definitely left behind here recently