Li's field

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In 2010, Severe Tropical Storm Lionrock is clearly shown to have peculiarly avoided Hong Kong.
Typhoon Cimaron (2006) was seemingly repelled away from Hong Kong.
Some people blamed Li Ka-shing for Hong Kong Observatory's insistence of not issuing a single No. 8 Storm Signal from 2005 to 2006.

Li's Field (Chinese: 李氏力場, also known as Li's force field or K.S. Field) is a tongue-in-cheek conspiracy theory in Hong Kong over the existence of a force field that repels tropical cyclones from the city.


The "Li" in Li's Field refers to local business tycoon Li Ka-shing, the implied developer of the field. The basis of Li's Field rests on the way Hong Kong's government is organized. The city's Commerce and Economic Development Bureau oversees the Hong Kong Observatory,[1] and that has led to speculations the Observatory bases its issuance of tropical cyclone warning signals on economic reasoning, instead of scientific reasoning.

In Hong Kong, schools above kindergarten level are shut down when Tropical Cyclone Signal Number 8 is issued (kindergarten classes are suspended when Signal Number 3 is issued),[2] and all non-essential staff at a workplace are sent home.[3] Some believe businesses have pressured the Observatory into avoiding the issuance of Typhoon Signal Number 8, in an effort to avoid economic losses.


From 2005 to 2006,[4] and again in 2010,[5] the Observatory did not issue a single tropical cyclone warning above Number 3.[6]

Typhoon Prapiroon[edit]

In 2006, Typhoon Prapiroon brought 200km/h wind to Hong Kong,[7] overturned containers, uprooted trees, and caused many flight delays at the airport,[8] but the Observatory did not issue Signal Number 8, remaining at the lower level Signal Number 3.[9]

Observatory Chief Lam Chiu-ying later said the decision was based on the fact that wind speeds in Kai Tak, near the Victoria Harbour, did not reach the level required for issuing Signal Number 8.[7] Nevertheless, humorous speculation arose that Li Ka-shing was behind the decision, in an effort to maximize productivity from his workers and prop up the economy.

Scientific reason[edit]

Media reports in 2010, citing research by the Observatory, revealed the reason behind the fewer occurrences of Signal Number 8. It is believed that an ocean temperature difference between the South China Sea and the Pacific Ocean is to blame.[10]

A track map of all storms in the 2010 Pacific typhoon season. No typhoons came across Hong Kong that year.

Reaction from the Observatory[edit]

Former Observatory Chief Lee Boon Ying told reporters in 2010 the Observatory has always put the safety of Hong Kong residents as its first priority, and is not swayed by business or economic concerns.[11]


In an impromptu survey conducted by Observatory Chief Shun Chi Ming at a student forum in 2014, about 20% of approximately 100 students in attendance say they believe Li's Field exists.[12]

Cultural references[edit]

Li's force field has been mentioned in local cultural media, and has been the subject of many Internet memes.[13]

See also[edit]


  1. ^ "Commerce and Economic Development Bureau - Home". Commerce and Economic Development Bureau of the Hong Kong Special Administrative Region. Retrieved 2 August 2014. In addition to the above policy responsibilities, our Bureau also oversees the operation of ten executive arms, namely the Invest Hong Kong, Intellectual Property Department, Trade and Industry Department, Hong Kong Observatory, Post Office, Innovation and Technology Commission, Office of the Government Chief Information Officer, Office for Film, Newspaper and Article Administration, Radio Television Hong Kong, Office of the Communications Authority, and the overseas Hong Kong Economic and Trade Offices.
  2. ^ "EDUCATION BUREAU CIRCULAR NO. 12/2013 Tropical Cyclones and Heavy Persistent Rain Arrangements for Kindergartens and Day Schools" (PDF). Government of the HKSAR Education Bureau. 5 July 2013. Retrieved 2 August 2014.
  3. ^ "Code of Practice in times of Typhoons and Rainstorms" (PDF). Labour Department. Hong Kong Special Administrative Region Labour Department. p. 21. Retrieved 2 August 2014.
  4. ^ 2005-06 in HKO Warnings and Signals Database, Hong Kong Observatory
  5. ^ 2010 in HKO Warnings and Signals Database, Hong Kong Observatory
  6. ^ "Frequency and Total Duration of Display of Tropical Cyclone Warning Signals :1956 - 2013". Hong Kong Observatory. Retrieved 2 August 2014.
  7. ^ a b Cheung, Tony (21 October 2013). "How ex-Observatory chief Lam Chiu-ying has become an unlikely scourge of the establishment". South China Morning Post (via Retrieved 2 August 2014.
  8. ^ Cheung, Chi-fai (13 October 2006). "Revamp of typhoon warnings considered". South China Morning Post. South China Morning Post Publishers Ltd. Retrieved 2 August 2014.
  9. ^ "Tropical Cyclone Warning Signals For Prapiroon". HKO Warnings and Signals Database. Hong Kong Observatory. Retrieved 3 August 2014.
  10. ^ "南海中層高氣壓 擋襲港颱風 (A High Pressure Zone Above the South China Sea Is Blocking Hong Kong-bound Typhoons)". Ming Pao. 23 October 2010. Archived from the original on 6 August 2014. Retrieved 2 August 2014.
  11. ^ "天文台指掛波不涉經濟 強調市民安全最重要 (The Observatory Says Economy Takes No Part In Issuing Cyclone Warnings, Stress Citizen Safety As The Top Priority)". AM730 (in Chinese). AM730 Media Limited. 26 October 2010. Retrieved 3 August 2014.
  12. ^ "學生信有「李氏力場」 (Students Believe In "Li's Field")" (in Chinese). Apple Daily. 11 May 2014. Retrieved 2 August 2014.
  13. ^ Metro - Metro in 18 years (Page 2, bottom left

External links[edit]