Chapter 503 Deep love

Evelyn had an idea and took out her phone to look at the problem. In the middle of the crowd, a white-haired old man sat in a recliner with his eyes closed. Beside him stood a blackboard on which three formulas were written in chalk. Evelyn's brow furrowed. She knew the symbols separately, but together, she was bewildered. Like everyone else, she searched the Internet for similar topics and found no exact answers. As she was depressed, Lucas's low laugh rang in her ear. "you want to get this?" Evelyn's...