C2447 decisive battle

Using flames to exchange for the last fragment of the Fire Phoenix or World's Box? This was not a matter of whether it was worth it or not. Rather, it was something that couldn't be changed at all. The Flamephoenix was his wife, and she was still carrying his unborn child in her stomach. Using his wife and his unborn child to exchange for his mother-in-law? He wouldn't even think about it