it depends on what you want to learn and what kind of experience you want I personally think HongKong is more similar with western society and more international, but if you want to know more Chinese culture, you'd better to choose mainland

呵呵， 着这个场景中， 它的意思是： 无论如何，不管怎么样；表示不管条件怎样变化，其结果始终不变；言外之意是你不要在找借口了 ‘怎么着’ means 'anyway' or 'anyhow' and i do not care what the excuse is , today you must give me the money

扔球 means throw the ball but 打球 means play a ball game which handle the ball with hands(eg. basketball,volleyball)

when we describing a small ship we use '只'as measure word, but in terms of big ship such as steamer we ues '艘' ； it's just phrase, no clear reason :D

HI --->你好 it's really nice to meet you-> 很高兴见到你 你好，很高兴见到你！

‘汽车’ is the general term of motor vehicle; 轿车means saloon car（common family car） 车 means vehicle, including vehicles with motor or without motor

在日常使用中，两个词的意思非常相近，都是指未成年人。只不过“儿童” 更为正式，孩子相对口语化。另外，当描述父母与子女之间的关系时，通常用“孩子”。 In daily using of chinese, the using of these two words are very similar, which both mean juveniles. But '儿童' is comparetively more formal. In addition, when we talk about the relationship between parents and children, we usually use '孩子'.