xí jìn píng习近平wèi shén me为什么fǎng wèn访问cháo xiān朝鲜？
Chinese President Xi Jinping recently visited North Korea and, together with Kim Jong Un, said that China-North Korea friendship is "unbreakable."
However, some experts believe that one important reason Xi went to North Korea this time was to remind North Korea that China has always been very important.
In the past, China was North Korea's most important trading partner and also gave North Korea a lot of support.
But in recent years, North Korea's relationship with Russia has become closer and closer.
North Korea provides weapons and personnel to Russia, and Russia may give North Korea military technology.
This has made China worry that its influence over North Korea is weakening.
Some people also believe that China and North Korea have similar goals in opposing the United States and the West, so the two countries will continue to cooperate.
For China, it is important that North Korea remains stable, because China does not want war or chaos to appear nearby.
Experts also say that now North Korea can seek more benefits between China and Russia.
Xi Jinping's visit this time was also a way of telling the outside world that China is still a very important friend and supporter of North Korea.