When sorting out and rewriting this content, I mainly focused on maintaining the original meaning, optimizing the sentence structure, using more appropriate vocabulary, and correcting typos.Here is the modified version:

Lei Shen suddenly came to report that he had discovered a Sichuan army unit. There has been no movement yet and it is suspected that adjustments are being made.Wang Zhensheng was doubtful about this. At the same time, Cai Ze also deciphered some important information about the enemy and confirmed the fact that Wang Longyun asked Chiang Kai-shek for help.He immediately informed Wang Zhensheng of the situation, and after learning the information, the headquarters responded quickly and asked the Fourth Red Army to immediately seek a breakout to the southeast to coordinate the actions of other troops and create favorable conditions for joining forces with the Central Red Army.condition.

In April 1935, Xu Xiangqian, the commander-in-chief of the Fourth Red Army, issued an order.He instructed the 31st Army to advance towards Gannan to contain the southern part of Hu Zong.At the same time, he also ordered the Ninth Red Army, the Thirty Red Army, and part of the main force of the Fourth Red Army to launch a comprehensive offensive against the Sichuan-Shaanxi region centered on Jiangyou.This action officially kicked off the Jiangyou War.

However, the Red 31st Army, which was responsible for opening up the Gannan Passage, made slow progress in the battle with Hu Zongnan, who was several times larger than itself. Due to the disparity in strength between the enemy and ourselves.Although they repeatedly requested military support, the headquarters did not give a clear response.They could only hold their position and wait for reinforcements to arrive.Soon after, Wang Zhensheng and others received news of Jiangyou's victory, and they quickly informed the headquarters of the good news.After Cai Zejue learned about it, he immediately began to convey the request for help to the headquarters.

Within the Fourth Red Army, Zhang Guotao and Xu Xiangqian had serious disagreements over the 31st Army's fourth telegram requesting reinforcements.Zhang Guotao advocated the establishment of Sichuan-Shaanxi base areas and believed that the 31st Army had completed its set tasks and should withdraw in time.Xu Xiangqian, on the other hand, insisted on obeying the strategic policy of the Party Central Committee and advocated the rapid opening of the Gannan Passage to achieve a rendezvous with the Red Army.The dispute between the two was fierce and difficult to reconcile, and they eventually broke up.

Xu Zhengye and Qu Xiangdong were worried and disappointed about the future of the Fourth Red Army. They were worried that this internal disagreement would affect the reunification of the First and Fourth Red Army.At this time, Cai Zejuan was nervously waiting for a reply in front of the radio station, but unexpectedly discovered that the enemy had changed the password.He quickly deciphered the enemy's troop arrangements to surround the Red 31st Army, and the headquarters immediately agreed to the 31st Army's retreat plan.

On the external battlefield, Dane once had conflicts with Huang Jibi due to problems with his cooperation.He angrily asked Huang Jibi whether he had forgotten his previous commitment, and accused Huang Jibi of having his code deciphered again by the Chinese Communist Party, which had caused huge losses to the party and the country.However, as the situation changed, the conflict between the two was temporarily alleviated, but it was not completely resolved.

While the Central Red Army is preparing to forcefully cross the Jinsha River, it is hoped that the Fourth Red Army can respond and take action at any time.This made Cai Zechuan's work burden heavier. He worked day and night, and his body gradually became exhausted.Despite facing tremendous difficulties and pressure, he still worked tirelessly, hoping to contribute to the revolutionary cause.In the process, he not only discovered clues to the enemy's password change, but also successfully deciphered the enemy's new password through association and verification, providing important intelligence support for the operations of the Fourth Red Army.

The above content is mainly a sorting and rewriting of the original text, aiming to retain the original meaning while optimizing the language and structure.Please note that due to the length and complexity of the content, there may be some details that require further refinement and adjustment.