你好 means hello or how do you do, is the most used way to say welcome. The pronunciation is like "Nee How"
welcome
ni hao (Chinese)
welcome to our world in Chinese
欢迎/Huānyíng
欢迎 [huānyíng]
wo do on tho geo
不客氣。 Bu ke qi.
Huānyíng lái dào wǒmen de jiātíng
Huānyíng lái dào North Carolina
welcome--欢迎 huan ying thank you--谢谢你 xie xie ni
In Chinese, "welcome back" can be translated as "欢迎回来" (huānyíng huílái).
欢迎到我们 Huānyíng dào wǒmen