i.e. vs e.g.

[i.e.] stands for [id est] in Latin, meaning [that is], [that is to say], [in other words].
[e.g.] stands for [exempli gratia] in Latin, meaning [for example], [for instance].
In the following examples, you'll notice that for [i.e.], all items referred to are listed, whereas for [e.g.], only one or some of the items referred to are listed.
Examples for [i.e.]:
The two special adminstrative regions of China, i.e. Hong Kong and Macau, are facing significant economic challenges.
The two main languages used in Hong Kong, i.e. Enghish and Chinese, are not percieved to have equal value, especially in government, business, and educational institutions.
Examples for [e.g.]:
Any densely populated city, e.g. Hong Kong, is always threatened by the danger of virus outbreak.
For clothing, the brighter colours, e.g. red and yellow, seem to be more popular in the summer.

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e.g. 是拉丁文 exempli gratia 的缩写，它的意思是“举个例子，比如”，等同与“for example”,目的就是用几个例子来说明前面的观点。

i.e. 是拉丁文 id est 的缩写，它的意思就是“那就是说，换句话说”，等同于“that is，in other words” ，目的是用来进一步解释前面所说的观点。

i.e. = that is (補充解釋)
e.g. = for example (舉例)