Question

北京以前叫北平，后来改成了北京。 Beijing used to be called Beiping and got changed into Beijing afterwards. [Past Event 1] ，后来 ，[Past Event 2] 北京 以前 叫 北平 ， 后来 改成 了 北京 。

Accepted Answer

běijīng yǐqián jiào běipíng ， hòulái gǎichéng le běijīng 。 Sequencing past events with "houlai" https://resources.allsetlearning.com/chinese/grammar/ASGY0UDC

中文	北京以前叫北平，后来改成了北京。
Pinyin	běijīng yǐqián jiào běipíng ， hòulái gǎichéng le běijīng 。
English	Beijing used to be called Beiping and got changed into Beijing afterwards.
Article Title	Sequencing past events with "houlai"
Grammar Construct	[Past Event 1] ，后来，[Past Event 2]
Source URL	https://resources.allsetlearning.com/chinese/grammar/ASGY0UDC
Splitted	北京以前叫北平，后来改成了北京。

Běijīng Beijing Event 北京 北京以前叫北平，后来改成了北京 Yǐqián Jiào Běipíng

Běijīng Beijing Event 北京北京以前叫北平，后来改成了北京 Yǐqián Jiào Běipíng