Luwei literally means a kind of seasoning, that is, a dish cooked with salt water or soy sauce mixed with spices and other seasonings. But lo mei is an impolite language in Cantonese, which means swearing. That's what Cantonese people mean when they say fried shrimps and crabs. But we don't want to play like this. We want to live a harmonious and civilized life. This is a good boy in China. Learning good manners is the most important thing to educate the next generation.