midnight online game session than usual. He was grinding his way through the涡轮增压赛道， already three laps behind the leader. Usually, this wouldn't bother him, but tonight he'd just hit a rough patch and kept spinning out. Annoyed, he slammed his fist on the virtual steering wheel.

Suddenly, a bright light flashed in front of his eyes. When he could see again, something was different. On his screen, a brand new tab popped up, labeled "跑跑卡丁车技能树". He'd never seen this before. With curiosity, he clicked on it.

A complex interface appeared, full of colorful buttons and lines. There were different categories like "Speed", "Handling", and "Nitro". Each category had several skills that could be upgraded with points. He noticed he had 100 points to distribute, which seemed suspiciously high.

He started reading the descriptions. The "Nitro Overflow" skill, for example, allowed him to use nitro for twice as long. The "Tire Grip" skill improved road holding. Each skill seemed incredibly powerful, like something out of a dream.