Is Rongcheng, Shandong humid? Is it suitable for northerners to live in?

I come from Heilongjiang. I lived in Guangzhou for ten years, and then I lived in Weihai for eight years. I like the climate here very much. There are many negative ions in the air with mountains and seas. There is no cold in the northeast, little snow, no rainy season in Guangzhou and no wet seaside. My home is 300 meters from the sea. If I have rheumatism, I can choose a place far from the sea.