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?

[![screenshot](https://i.stack.imgur.com/OPmf6.png)](https://i.stack.imgur.com/OPmf6.png)
CC BY-SA 4.0
2019-07-10T17:20:24.657
69393
2019-07-10T17:20:24.657
30008
question
particles adverbs
What does なんと mean here?