Why is "Fourth encirclement campaign against the Jiangxi Soviet" trending?

Wikipedia Overview

The fourth encirclement campaign against the Jiangxi Soviet was the fourth campaign launched by the Chinese Nationalist Government in hope to destroy the Red Army in Jiangxi. The Nationalist headquarters in the provincial border of Jiangxi-Guangdong-Fujian organized nearly 400,000 men, and prepared for another major encirclement on the Chinese Soviet Republic. As a response, the Jiangxi Soviet launched the fourth counter-encirclement campaign at the Central Soviet, also called as the fourth counter-encirclement campaign at the Central Revolutionary Base. Although the Red Army achieved victory once again, their counter encirclement was not as successful as the previous ones this time, and the Red Army elsewhere suffered considerable loss when many other Communist bases were lost, including two major ones.