宝宝巴士2.0

Meaning

Baby Bus 2.0. Refers to the scene at 2022 MSI where RNG (Chinese LoL pro team) all took turns going through hex gates in order toward the enemy base. Hex gates in LoL are fast travel devices - enter one end, appear at the other. RNG players lining up and entering one after another, moving like a train, looked so comical they were nicknamed "Baby Bus" (referring to the popular children's brand).