Respect the Elderly, Love the Young

Xiao Han is on a bus heading to her brother's engagement banquet when she runs into an unreasonable elderly couple who demand she give up her seat. Xiao Han refuses, explaining that she's on her period and feeling unwell—but the old man simply plops down onto her lap, sparking a confrontation. The old man hits his head, and when the driver won't stop the bus, he forcibly grabs the steering wheel, causing a crash. Later, the old man's daughter, Wu Xinran, arrives and falsely accuses Xiao Han of being a homewrecker—yet she is none other than Xiao Han's brother's fiancée. In the end, the wedding is called off, and she is left with nothing but regret.