One possible version:
I’m pleased that you’re coming to tour in China.
I suggest that you begin from Beijing, and I’ll show you around. Tianjin will be your next stop. After that, you can go to Shanghai, where you can stay for a week. You can take high-speed trains to both cities.
Summer in these cities is hot and rainy, so take summer wear plus an umbrella with you.
Looking forward to your arrival.