C521 There can only be me in this heart

This was a more difficult problem than the previous one.

Chu Xia's fingers had already turned a little white, and her lips, were fiercely bitten as well.

It was just a simple "yes" word, but the pronunciation was extremely simple.

However, at this moment, it was as if a thousand kilograms of heavy stones were pressing down on her heart. No matter how hard she tried