If Liu Jiahao didn't step forward, perhaps Chen Meng'er would go on stage and act coquettishly to her grandfather, Elder Liu, so that he would have to work hard for a few more years.
Chen Meng'er was very confident in her acting coquettishly now.
And Elder Liu also knew what his weakness was. He had kept it a secret previously because he was afraid that once Chen Meng'er found out, she would come to him and act coquettishly. If she wanted him to take back this idea, he might soften his heart and agree. Even before Elder Liu went on stage, he had been worried about this. He was afraid that his precious granddaughter would come on stage and act coquettishly to him.