据此 / 由此 / 由此可见jùcǐ / yóucǐ / yóucǐ kějiàn

Based on This / From This / Thus It Can Be Seen: 据此 / 由此 / 由此可见

Meaning: Based on this (据此) / From this (由此) / Thus it can be seen (由此可见)

Pattern

The trio "据此 / 由此 / 由此可见" are formal connectors used to link facts or data to subsequent actions, consequences, or deductions:
(1) "据此" (jùcǐ — based on this / accordingly): equivalent to "根据这一点", indicating that a decision, policy, or judgment is made on the basis of the facts or data just mentioned (e.g., 调查显示销量下降，据此公司调整了策略).
(2) "由此" (yóucǐ — from this / hereby): indicates that a phenomenon, discussion, or consequence originates or arises from the preceding event (e.g., 由此引发了广泛的讨论, 由此产生).
(3) "由此可见" (yóucǐ kějiàn — from this it can be seen that)

1
调查结果显示销量下降，据此公司调整了策略。
Diàochá jiéguǒ xiǎnshì xiāoliàng xiàjiàng, jùcǐ gōngsī tiáozhěngle cèlüè.
The survey results showed a drop in sales; based on this, the company adjusted its strategy.
2
由此引发了广泛的讨论。
Yóucǐ yǐnfāle guǎngfàn de tǎolùn.
This sparked widespread discussion.
3
由此可见，环境保护刻不容缓。
Yóucǐ kějiàn, huánjìng bǎohù kè bù róng huǎn.
From this it can be seen that environmental protection brooks no delay.

•据此 = based on that evidence (to act); 由此 = arising from that point (effect); 由此可见 = from this we can deduce the conclusion.

⚠️ Common Mistakes:

•Using 据此 without any preceding concrete data, rule, or evidence to refer back to ("此").

•Using 由此可见 when the second clause merely repeats a fact rather than stating a logical deduction.

•Confusing 由此 (emphasizing the starting point/origin from which something arises, e.g., 由此引发) with general 因此 (therefore).

Combine Vocabulary, Grammar, Reading Practice, Listening, Hanzi Writing, and Mock Exams at HSK 6 to master all skills together.