1. Present simple tense: The answer uses the present simple tense ("Chinese people tend to greet...", "Complimenting... is also quite typical") to describe general habits and customs, which is appropriate for this kind of question.
2. Gerund as subject: "Complimenting the host's home or the dishes they've prepared" uses a gerund phrase as the subject of the sentence, showing a good command of complex sentence structures.
3. Infinitive of purpose: "...are important for showing respect and appreciation" uses the infinitive structure to explain the purpose of the gestures, adding clarity and depth to the explanation.
4. Coordinating conjunction: The use of "and" to join ideas ("respect and appreciation", "positive, friendly tone") helps the answer flow naturally and smoothly.