jìn zhù hù qún yǐ hòu kě yǐ xiān fā yī jù jiǎn dān de huà dà jiā hǎo wǒ shì A dòng yī èr líng liù de xīn zhù hù yǐ hòu qǐng duō guān zhào

进住户群以后，可以先发一句简单的话：“大家好，我是 A 栋 1206 的新住户，以后请多关照。

After joining the residents' group, you can first send a simple greeting: 'Hello everyone, I'm a new resident of Building A, Unit 1206. Please look out for me in the future.'