1. Rongcheng Museum: This is a good place to learn about Rongcheng's history and culture. If it rains, you can take shelter indoors and get to know Rongcheng's past lives.
2. Rongcheng Library: This is a good place to visit in rainy days. You can read books, newspapers or magazines here, which is a very good place for rainy days.
These places are all suitable places for Rongcheng in rainy days.
As for the itinerary, it depends on your interest and time. You can choose these places according to your itinerary.
In terms of transportation, Rongcheng has many modes of transportation, such as buses and taxis. You can choose the most suitable mode of transportation according to your own needs.
As for accommodation, Rongcheng has many hotels and homestays to choose from. You can choose the most suitable accommodation according to your own needs.