I'm reading this introduction to mahjong, and found this use of なんと I cannot match to anything in Daijisen.
１回目のツモがまったく関係ない西で、そこでローワンをアンカンしたら、なんとリンシャンからイーソウをツモ。
As I understand it, the line means something like:
The first draw was the useless 西, but then you used the 6 of characters to form a kan, and the replacement tile you drew was the 1 of bamboos [which got you into tenpai.]
But where does the なんと fit in here? How does its presence affect the sentence?
