(Update 10-01-2011) We went to Youyou’s school this morning for “Parents work day”, basically they have some small playground improvement projects (painting, making a new climber), and in the lunch time, we have a BBQ and potluck. The ethnic diversity of the students/parents background surprised me a bit, reminded of Rolla (a lot of Indian and Chinese faculties and graduate students). It took some efforts to pull together such an event, thanks to David and his staffs 
(Original) Youyou is a 18 month and 18 days old. She started the program on Aug 29, and 4 weeks has passed. She has transformed from “crying when mom left her in the school” to today “she no longer cries when mom drop her”.
She can say quite a few Chinese words and some sentences. She has good memory probably due to genetic reason (we are both good at memorizing things). She also can feed herself a bit, and be much more proactive when playing with us. For instance, she came to grab me for dinner when I was on phone last Sunday evening (mom did not ask her). Not to mention grabbing my glasses (she is very fast). When I go to work, she will usually say “Mao Zi” which means “wear a cap”, and say “bye bye” (which she learned a while ago).
I attended a class offered by David (the head of Hope Toddler program) this morning, Dave is quite enthusiastic and I think the No. 1 thing for me is learn, because kid is learning from parents, all the time.