2, filling: xiàn. original meaning: wrapped in pasta or snacks and other food inside the meat, vegetables, sugar and so on.

3, dew filling is a Chinese word, pinyin is lòu xiàn, metaphorical refused to let people know and hidden things exposed. For example, in front of the physical evidence, the lie is exposed. (The word is from Huashan's "The Chicken Letter": "You don't dare to yell blindly without being stuffed; once you are stuffed, you can snatch it up and swallow it in your stomach.")