Dear Li Hua,

I'm excited to hear that you're coming to Beijing for a visit! Here are some things to keep in mind during your trip:

1. Weather: Beijing can be quite hot and humid in the summer, so make sure to bring light and breathable clothing. It can also get chilly at night, so pack a light jacket.
2. Transportation: Beijing has a great subway system that's easy to use and affordable. Taxis are also readily available, but make sure to negotiate the fare before getting in.
3. Food: Beijing is famous for its delicious cuisine, but be careful with street food and make sure to drink bottled water to avoid getting sick.

As for a travel guide, I recommend visiting the Great Wall, the Forbidden City, and the Summer Palace. These are all must-see attractions that showcase China's rich history and culture.

I hope you have a wonderful trip and enjoy your time in Beijing!

Best regards,
Li Ming