In this episode Eddie doesn't even have a basic grasp of Mandarin and ends up getting lost in Taiwan. In many previous episodes, he understands the language, and even speaks it sometimes, extremely well.
Jessica explains to Eddie that in Taiwan, 119 is their 911, but it's for fire and ambulances, while 110 is for the police.
Many Simplified Chinese words can be found on the Metro ticket vending machine, which is considered an error since Taiwan uses the Traditional Chinese writing system.