Change for better, not worse!
It's a part of the email to my friend Lisa. It's also what I learned and experienced in last months.

Hi Lisa,

My father returned to Shanghai this afternoon by train. He stayed here for about one month and was eager to go back home since he was distracted by someone in Shanghai :D
Two months ago, he knew a lady introduced by his friends. They felt comfortable to each other and my father is considering her as his partner for the rest of life. I haven't accepted the fact that my father really needs a close partner to take care of him for the rest of life until this Mother's Day (the 8th of May). A  good friend of mine had a long talk with me that day. He made me realize that I was so selfish to my father in the past two years. I used to be very unhappy and opposed when I knew my father's intention to find a partner... I just kept asking my father why and telling him he can overcome living alone or come to live with me in HK....My friend's experience made me know the difference of the care from daughter and the care from a partner. After I changed my mind and accept the thing, all my unhappiness about my father suddenly disappeared:P It's amazing! I was so silly when I was insisting on my own opinions while neglecting my father's needs.