science

LIHKG

LIHKG is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand LIHKG rather than just read about it. In short: LIHKG (Chinese: 連登; Jyutping: Lin4 dang1; Cantonese Yale: Lìhn dāng) is a multi-category forum website based in Hong Kong. The website has gained popularity since the launch in 2016, and is often referred to as the Hong Kong version of Reddit.

Key takeaways

LIHKG belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect LIHKG to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of LIHKG from memory before moving on to harder problems.

Reference excerpt

LIHKG (Chinese: 連登; Jyutping: Lin4 dang1; Cantonese Yale: Lìhn dāng) is a multi-category forum website based in Hong Kong. The website has gained popularity since the launch in 2016, and is often referred to as the Hong Kong version of Reddit. Threads with more up-votes and replies appear towards the top of topic sections and, if they receive sufficient votes and replies, they will ultimately be on the site's "Popular" section.

The website is well known for being one of the main platforms for discussing the strategies for the leaderless anti-extradition bill protests in 2019–2020.

Background In 2016, HKG+, a 3rd party app of HKGolden was suspended by HKGolden. On 21 November 2016, the developer of HKG+ announced on their Facebook page that they have shared part of the source code of the app with another developers, Hui Yip-hang (許業珩), who is known as "連尼住" (Jyutping: lin4 nei4 zyu6) on the forum, and Mong Yuen (望遠). Based on the source code, they developed LIHKG.

Registration Registration of membership is restricted to people with a Hong Kong ISP or an institution of higher education email address located in Hong Kong. Registered members may create threads on the site, while uploading contents such as text posts, hyperlinks or images. The posts then receive replies and may be voted up or down by other members. Posts are separated into various categories and are then grouped in the "Chat" category.

Attacks During the 2019–2020 Hong Kong protests in December 2019, the LIHKG website was subjected to a DDoS attack by the Great Cannon of China.

See also Hong Kong Discuss Forum HKGolden Forum 2019–2020 Hong Kong protests

Notes

References

External links Official website (in Chinese)

Illustrations

Worked examples

Example 1 — a first encounter with LIHKG

Start with the simplest possible case. Write down what LIHKG claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to LIHKG before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about LIHKG ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of LIHKG

In research: LIHKG appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses LIHKG in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: LIHKG is common in secondary-school and first-year university syllabi. It links to neighbouring topics 2016 establishments in Hong Kong, Hong Kong websites, Internet forums in Hong Kong, so understanding it makes those chapters shorter.
In everyday life: Look for LIHKG outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study LIHKG in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what LIHKG means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain LIHKG out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is LIHKG in simple terms?

Why does LIHKG matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study LIHKG?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on LIHKG.