From 2 December 2000, the Green car (car 4) was made entirely non-smoking, and the internal partitions were removed between December 2000 and January 2001.
从2000年12月2日起，绿色车厢（4号车，头等）完全禁烟，内部间隔墙在2000年12月至2001年1月期间拆除。