This time when I went to Baoxing, Ya'an, I saw the monument of the Red Army crossing Jiajin Mountain and decided to drive over Jiajin Mountain. Of course, this can't be compared with the difficulties of the Red Army's Long March, but it is just a physical examination from another perspective. Jiajin Mountain is high and densely forested, with a changeable climate. The highest altitude is more than 4,000 meters. During the driving process, I saw mountains connected to mountains, and there were distant mountains behind the nearby mountains, and higher mountains behind the high mountains. It is really hard to imagine how much hardship the Red Army suffered, and how strong their perseverance and faith were to persist until the founding of New China.