C511 Crawford Was Shocked

The phone's speaker emitted crisp, fluent English.

"Hello, this is Crawford, the scientific advisor at the Clay Institute of Mathematics!"

"Who is this? How can I assist you?"

Crawford was unaware that he was speaking to Tang Haodong, hence his query.

Tang Haodong steadied himself and switched to an English-speaking tone, "Ms. Crawford, this is Tang Haodong, the one who verified the N.P