Zǎo gāofēng jǐ dìtiě zhēn de shì yì cháng zhàndòu.
Getting on the subway during morning rush hour is literally a battle.
Tips
culture
Beijing Line 13, Shanghai Line 9, and Guangzhou Line 3 are legendary for rush-hour crowds. 挤 here is a verb meaning 'to squeeze/cram into' — physical and very literal when cars are full.
usage
Pattern 挤 + transit verb extends: 挤公交 (cram onto the bus), 挤电梯 (cram into the elevator).