How to summarize a conversation with 简言之, 说白了 and 换句话说
The phrases 简言之, 说白了 and 换句话说 have the same meaning and are used to summarize what has been said earlier.
简言之
The phrase 简言之 
is placed at the beginning of a sentence and is followed by a comma.
is placed at the beginning of a sentence and is followed by a comma. Pay attention
简言之 is usually used in written language.
Examples
我们交换自己的看法，进行讨论，获得了共识。简言之，这次交谈是成功的
We exchanged our views, had some discussions, and reached a consensus. In short, the conversation was a success
wǒmen jiāohuàn zìjǐ de kànfǎ, jìnxíng tǎolùn, huòdé le gòngshí. jiǎnyán zhī, zhè cì jiāotán shì chénggōng de
我们的语言，思考方式，饮食习惯都有所不同。简言之，这就是文化差异
Our language, our way of thinking, and our eating habits are all different. In short, there’s big a cultural difference
wǒmen de yǔyán, sīkǎo fāngshì, yǐnshí xíguàn dōu yǒu suǒ bùtóng. jiǎnyán zhī, zhè jiù shì wénhuà chāyì
降低成本的途径之一将是与外国公司结成联盟或通过适当的兼并进行国际性扩张。简言之，就是全球化
One way to reduce costs would be to form partnerships with foreign companies or expand internationally through appropriate mergers. In short, it is globalization
jiàngdī chéngběn de tújìng zhī yī jiāng shì yǔ wàiguó gōngsī jiéchéng liánméng huò tōngguò shìdàng de jiānbìng jìnxíng guójìxìng kuòzhāng. Jiǎnyán zhī, jiù shì quánqiúhuà
说白了
The phrase 说白了 means "frankly speaking", "in short".
If the phrase is placed at the beginning of a sentence, we should put a comma after it. If the phrase is placed in the middle of a sentence, we should put commas before and after it.
means "frankly speaking", "in short".
If the phrase is placed at the beginning of a sentence, we should put a comma after it. If the phrase is placed in the middle of a sentence, we should put commas before and after it. Pay attention
It is often followed by 就是 .
.
说白了 is usually used in spoken language.
Examples
学生组织，说白了，就是一群人一起学习，一起做喜欢的事儿
In short, a student organization is a group of people who study and do what they love together
xuésheng zǔzhī, shuō bái le, jiù shì yì qún rén yìqǐ xuéxí, yìqǐ zuò xǐhuan de shìr
其实酒店行业，说白了，就是如何关心人，照顾人
In fact, the hotel industry is about taking care of people
qíshí jiǔdiàn hángyè shuō bái le jiù shì rúhé guānxīn rén, zhàogù rén
说白了，这意味着审查和监视 他们的用户
In short, it means censorship and user monitoring
shuō bái le, zhè yìwèizhe shěnchá hé jiānshì tāmen de yònghù
换句话说
The phrase 换句话说 is placed at the beginning of a sentence and is followed by a comma.
is placed at the beginning of a sentence and is followed by a comma.Examples
换句话说，富人越来越富
In other words, the rich get richer
换句话说，他认为这是规则的一个例外
In other words, he thinks it's an exception to the rule
huàn jù huàshuō, tā rènwéi zhè shì guīzé de yí ge lìwài
换句话说，那就是新时代的黎明
In other words, it was the dawn of a new era
huàn jù huà shuō, nà jiùshì xīn shídài de límíng