C291 The song family's feast

After Lin Gudu obtained the black iron mask fragment from the executioner, he did not bring it with him. Instead, he had Zhang Xiaotian bring it along with him to the Yanjing that very night, personally handing it over to the Uncle Qi so that the Uncle Qi could study it through the mysterious Bureau of Investigation.

Waiting for results is a very troublesome process, maybe a day, maybe a year