Say Hello in Mandarin

你好= nǐ hǎo = Hello.
您好 = nín hǎo = Hello: to be the most polite Chinese learner. to express respect towards respectful / elder people.
大家好 = dàjiā hǎo = Hello everyone: to greet a crowd/everyone.
你们好 = nǐmen hǎo = Hello everyone: to greet a crowd/everyone.
早上好 =zǎoshang hǎo = (Hello) Good morning. ( 6am to 9am )
上午好 = shàngwǔ hǎo = (Hello) Good morning. ( 9am to 12am )
下午好 = xiàwǔ hǎo = (Hello) Good afternoon.
晚上好 = wǎnshàng hǎo = Good evening
最近好吗？= zuì jìn hào mǎ = How are you these days?
喂 = wèi  = Hello (to answer on the phone).
哈罗 = hā luō = Hello (a loanword the Chinese borrowed from English.)
嗨 = hāi = Hi (a loanword the Chinese borrowed from English.)
哎 = āi = hey!/(interjection used to attract attention or to express surprise or disapprobation)
好久不见 ！= hǎojiǔ bújiàn! Long time no see!
最近过得怎样呀？= zuìjìn guò dé zěnyàng ya? = How has been life recently? (How are you?)
去哪儿？= qù  nǎ er = Where are you going? (How are you?)
吃了吗？/ 你吃了吗 = chīle ma? / nǐ chī le ma = Have you eaten ?