Tie like a dog

"A gold mine? I see," Song Yixu nodded as if it was quite normal however a second later her eyes widened as she looked at Yu Dong and shrieked, " A GOLD MINE?" 

How come Yu Dong got her hands on the gold mine? Why did she not get her hands on something this good?

Yu Dong flinched under the harsh pitch of Song Yixu's voice, she blinked her eyes and then rubbed her ears before saying, "There is no need to look so shocked. I haven't agreed with the offer yet," if she was being honest, she wanted to agree with the offer that Murong Si had made to her but the amount of troubles that might come to her doorstep after she agreed, Yu Dong was not willing to face them. 

When Song Yixu heard Yu Dong's response, she wanted to ask whether she had gone crazy to turn down such an offer but then she thought about how Yu Dong would be entangled in a mess after she became the owner of the gold mine and closed her mouth.