"But you can't do this..." Tang Yuran's muffled voice came from within Gu Yu's embrace, her voice tinged with sobbing as she spoke to Gu Yu, "Why do you always do this? Before, you would leave without saying goodbye, and this time... at least you told me in advance, but it's only three or four days in advance..."
"I'm sorry... I'm sorry..." Gu Yu tightened his arms around Tang Yuran, he lowered his head, leaned close to Tang Yuran's ear, and repeatedly whispered "I'm sorry" to her.
"Then when will you come back??" Tang Yuran suddenly lifted her head, her large, clear black and white eyes gazing at Gu Yu as she sniffled forcefully and asked, "How long will you be staying in America??"
"I... I don't know either." Gu Yu gave her a wry smile and said, "If the surgery goes well, probably a year and a half, I'll be back. But if the surgery doesn't go well, maybe I'll..."