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Last Update: April 2026

General

Electricity - Plug and socket types

Electricity - Types by Country

Google Currency

Map - Apple Maps ↪︎Apple Apps

Map - Google Maps ↪︎Apple Apps ↪︎Google Play

Online Conversion

Satellite Imagery - Google Earth
➝‬ For historical context

Satellite Imagery - Copernicus Browser
➝‬ For multispectral analysis + clouds/smoke workarounds

Satellite Imagery - Arcgis World Imagery Wayback
➝‬ For change detection you can show instantly

Satellite Imagery - Arcgis Maps Viewer
➝‬ For highest resolution free reference view

Satellite Imagery - Apple Maps
➝‬ For an alternative perspective / different capture

Satellite Imagery - Bing Maps
➝‬ For an oblique aerial angles (bird's eye)

Translate - Bing

Translate - Google

Translate - 漢語多功能字庫

Translate - 羊羊粵語

 

Travel Blog / Guide

Backpackers 背包客棧 (Chinese)

FlyerTalk (forum)

Lonely Planet

Scissors on plane?

TripAdvisor

Wikitravel

Booking / Flight / Hotel

- Travel.State.Gov Travel Advisories

- FAA - PackSafe for Passengers

- ETIAS is an entry requirement for visa-exempt nationals travelling to any of these 30 European countries. Linked to a traveller’s passport. Valid for 3 years or until the passport expires.

Agoda

Booking

Expedia

Google Flights

Hostel World

Priceline

 

eSim Data Provider

- esims list

- esimdb list

3 Travel eSIM

Airalo

BetterRoaming

BNEsim

eSim2Fly

Keepgo

KeepGo

Nomad

ReateaGo

Ubigi

Yesim

 

Calling International Number Prefix:

00 - international direct dialling - followed by a two or three digit country code, followed by the national number with the leading zero removed. The international notation for this is + where +=0 in the USA and +=00 everywhere else. If you store international numbers in a cellphone with a + on the front the network figures it out.


China


Hong Kong

Visa - Requirement for each country

 

$1000 bill are NOT widely accept. Please go to a nearby convenience store (7-Eleven/Circle K) or supermarket (Parknshop/Wellcome) to make a purchase to convert it into smaller bills.

ATM - some ATM do disburse $1000 bills, but most do not. Before you insert your card, look at the screen. It will display what bills it will disburse: $100 | $500 | $1000. Note: I would advise against going to any Bank of China atm. Their disburse cash are usually the ugliest, roughest, and dirtiest looking cash.

Credit card - is still not accepted everywhere, remember to have cash on hand.

Octopus card is a must for all transportation needs and can be use for food and retail payments

 

Central Plaza 中環廣場 | 港灣道18號 | 18 Harbour Road | visit anytime except public holiday | go to 2/f to take lift to 46/f transfer lobby for the free observation deck

Hysan Place 希慎廣場 | 軒尼詩道500號 | 500 Hennessy Road | visit anytime | you may use the office lift (G/F to 10/F) or the mall lift (any floor to 9 or 10/f) to the office sky lobby (aka observation level) | If using the mall lift, looks for signs to the office lobby/lift. The glass door will be locked, but there is a light wood colour side door on the right if you continue walking pass passenger lift #1 #2 #3. Side note, there is a coffee shop on the 9/F (office lift from B1/F to 9/F or mall lift). Both levels have lovely views of Causeway Bay.

 

Guide - Lonely Planet

Guide - Reddit

Guide - Tripadvisor

Guide - Wikitravel

HKU - Campus Visitor Registration (required for weekdays)

Map - Google Map

Map - HKBus 巴士到站預報 check bus arrival time


Japan


South Korea


Taiwan


Thailand


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