Project 571 (Martian timeline)

Project 571, also referred to as the Red Watch mutiny, was an insurrection within the Red Watch led by Lizhang Zhuyi against commander Xu Qifeng and vice commander Liu Tongguan. The mutineer group, calling themselves the New Sol faction, attempted to assassinate Xu who was on a train headed for Olympus Mons city, while attempting to frame Liu for the crime. The mutiny, which was secretly backed by the Pirate Confederation, ultimately collapsed and all mutineers were killed.

Valles Marineris battle
Xu rode with Lizhang on a train bound for Olympus Mons city with about 30 of Lizhang's men as escort. It was on this train that Lizhang planned to assassinate Xu and pin the blame on Liu.

Liu Tonggua showed his true colors by thwarting Lizhang's attempt on the commander's life and fought his way to the back of the train, bringing the commander with him.

Shi, planning to kill everyone on the train including Lizhang, had his mercenaries await the train at Valles Marineris as it approached the 1st Marineris Bridge. The bridge was bombed as the train crossed, sending it crashing down into the ravine below. Lizhang was killed instantly along with many of his men, while others bled out from critical injuries; they were promptly granted mercy kills by Xu and Liu, who stabbed them individually. After that, they contacted the nearest city and called for reinforcements, before arming themselves against Shi's incoming mercenaries.

As mercenaries rappelled down to kill any survivors on the train, Xu and Liu ambushed them and held them off, and managed to shoot down a helicopter carrying enemy reinforcements. This firefight continued for 2 hours, with Liu being mortally wounded by an RPG round. The pair was relieved by 2 Red Watch helicopters, which strafed the mercenaries before landing a squad led by Corporal Wu Chan to secure the train.

Mutiny in other areas
Following the attempted assassination of Xu at Valles Marineris, attempts were made to arrest Red Watch officers suspected to be linked to the coup, resulting in violence in Hongjing and Olympus Mons city that lasted several days. Most of the mutineers were killed in a series of firefights, and a group of survivors committed mass suicide at a Hongjing Police headquarters.