This was my first time visiting London, England for six days, and afterward, I'll be heading to Iceland for a 13-day self-drive trip. On the first day, I joined a tour led by Jia Hui to Cambridge University and the Greenwich Observatory. I finally got to see Xu Zhimo's memorial stone, but unfortunately, the weather didn't cooperate, and it poured rain during the boat ride, leaving me soaked even with an umbrella. I also saw Newton's apple tree. The lovely Jia Hui thoughtfully prepared fresh apples for each tourist for our photos. Throughout the day, in addition to detailed explanations, she also took care of everyone's feelings and needs. Thank you, Jia Hui!