I took the 877 bus to Badaling wall. The 877 bus stop is next to it. You pay when you get onto the bus. CNY 12 per person. Quite a comfortable trip. On the bus, there was a kind guide who provided information about the Great Wall of China. Honestly, I never thought there would be a guide to tell us all these information in the first place for a public bus and at this considerably cheap price. He would tell you the do and don`ts; where to get the best view; the time to come back for the last bus; etc. It was an unexpected good service.
Some of the walkway could be quite steep. And the steps are knee high. It was quite tough. Firstly, I thought of going to the highest point. Gave up when I reached the 5th station. (9th being the highest).Nevertheless, despite the hardship of climbing it. It was still an adventure.
After returning from the North Side. I had some sausages before I went to the South Side. Sausage are the the staple snack food for the Chinese. You will see it everywhere.