Short answers, pulled from the story.
The Battle of Yenangyaung was fought from the 16th to the 19th of April 1942 in Burma, during the World War II Burma Campaign. Almost 7,000 British soldiers, along with 500 prisoners and civilians, were encircled by Japanese forces near the Yenangyaung oil fields. Chinese forces from the New 38th Division's 113th Regiment, supported by British armour, broke the encirclement.
Sun Liren's 113th Regiment of the Chinese New 38th Division rescued the trapped British forces. On the 17th of April 1942, Sun led 1,121 soldiers southward, supported by the 7th Armoured Brigade. Lieutenant General Slim assigned that brigade to fill the Chinese regiment's lack of artillery and tanks.
Sun Liren commanded the Chinese New 38th Division of the Chinese Expeditionary Force in Burma. At Yenangyaung, he requested permission to lead his full division in the rescue but was refused by General Luo Zhuoying. He led the 113th Regiment instead, combining with British armour to break the Japanese encirclement.
The Yenangyaung oil fields were a key fuel source targeted by Japanese forces advancing through the Irrawaddy River valley after capturing Rangoon in March 1942. Lieutenant General Slim ordered the fields and refinery demolished on the 15th of April 1942 to prevent them falling into enemy hands.
Almost 7,000 British soldiers, along with 500 prisoners and civilians, were encircled by the IJA 33rd Division at Yenangyaung on the 16th of April 1942. The 1st Burma Division fought through to the Pin Chaung river, where it met the Chinese relief column on the 19th of April.
The Monument to the Great Victory of Yenangyaung is a memorial erected in 2013 to commemorate the 1942 battle. It was promoted by Liu Weimin, the son of Liu Fangwu, who commanded the 113th Regiment during the fighting. The monument reflects the battle's enduring significance in Chinese military memory of World War II.