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[[File:The Threshold of a Persona.jpg|thumb|230px|The Threshold of a Persona]]

==Details==
*'''Title:''' ID 精英
*'''Cantonese/Mandarin title:''' ID Ching Ying / ID Jing Ying
*'''English title:''' The Threshold of a Persona
*'''Also known as:''' 真心英雄 / Cordial Heroes
*'''Genre:''' Police, action, romance
*'''Episodes:''' 26 (Hong Kong) / 30 (overseas)
*'''Broadcast network:''' TVB
*'''Broadcast period:''' 2009-Jun-01 to 2009-Jul-05
*'''Air time:''' Monday to Friday 21:30 - 22:30
*'''Opening theme song:''' ''Conceal'' (掩飾) by [[Roger Kwok]] and [[Patrick Tang]]

==Synopsis==
First TV series with immigration work
Top confidential of Hong Kong's border security

Immigration Department is guarding the door of Hong Kong, and seeks out to prevent doubtful identities and criminals from entering Hong Kong. It only not creates a highly demanding task for immigration officer and also raises a further question - how will they make identity verification as accurate as possible?

FONG TSUN KIT ('''Kwok Chun On''') becomes friends with two other candidates CHENG PAK YUE ('''Cho Wing Lim''') and YIP ON KEI ('''Mung Ka Wai, Yoyo''') while applying for a post in the Immigration Department. YU is an aggressive person. He later moves to the Police Force and is promoted to Senior Inspector of Regional Crime Unit. While investigating a murder case, he realizes that the new gang leader WU KIT SUM (Wong Tak Bun) has killed somebody because of KIT's wife. It totally turns KIT's life upside down. As a good friend, KEI helps KIT take care of his son after a failed relationship with YU. When two hearts meet, an extraordinary link spontaneously draws them together. Meanwhile, AU SHUN FUNG ('''Patrick Tang''') appreciates KIT's ability very much and recommends him to MAK KAI MING ('''John Chiang'''), Head of Investigation Section. KIT gains approval and he is determined to start anew. While carrying out an investigation on a fraud syndicate, he comes upon his missing wife and uncovers her long-hidden identity.

Credits to Astro On Demand

==Cast==
;Fong Family
*[[Lau Kong]] as Chung Kwok Sing 鍾國誠
*[[Mary Hon]] as Chan Mei Ping 陳美萍
*'''[[Roger Kwok]] as Fong Chun Kit 方浚杰'''
*[[Ben Wong]] as Chung Chi Wing 鍾志榮
*'''[[Toby Leung]] as Chung Chi Yan 鍾志欣'''
*'''[[Claire Yiu]] as Cheung Si Man 張思敏'''
*[[Iris Wong]] as Chiu Lai Man 趙麗文
*[[Tam Jan Yut]] as Fong Ka Hei 方家希

;Yip Family
*[[Apple Lo]] as Lee Siu Kuen 李少娟
*'''[[Yoyo Mung]] as Yip On Kei 葉安琪'''
*'''[[Natalie Tong]] as Yip On Yi 葉安兒'''
*[[Wong Yeuk Nam]] as Yip Sze Sze 葉詩詩

;Extended Cast
*'''[[Patrick Tang]] as Au Shun Fung 歐順風'''
*'''[[Raymond Cho]] as Cheng Pak Yu 鄭柏宇'''
*[[Kenny Wong]] as Wu Kit Shum 胡傑琛
*[[John Chiang]] as Mak Kai Ming 麥啟銘
*'''[[Power Chan]] as Leung Chi Lun 梁智倫'''
*[[Ellesmere Choi]] as Hon Wing Nin 韓永年
*[[Queenie Chu]] as Ching Pui Ka 程佩嘉
*[[Shermon Tang]] as Lee Hiu Man 李曉雯
*[[Ruco Chan]] as Mak Tze Hin 麥子軒
*[[Lee Kwok Lun]] as Wai Hon To 韋瀚滔
*[[Eric Li]] as On Hong Cheung 安康祥
*[[Suet Nei]] as Wong Gwai Ho 黃桂好
*[[Raymond Tsang]] as Kong Chak Fai 江澤輝
*[[Rebecca Chan]]
*[[Yvonne Lam]]
*[[Joey Mak]] as Au Shun Shui
*[[Eileen Yeow]] as Hon Wing Nin's Sister
*[[Jacky Yeung]] as Chow Jing Ngoc 周正岳
*[[Wu Kei Fung]] as Cheung Siu Yau 張兆有
*[[Cilla Kung]]
*[[Casper Chan]]
*[[Sherry Chen]]
*[[Catherine Chau]]
*[[Vivi Lee]]
*[[Rabee'a Yeung]]

==Production Credits==
*'''Screenwriter:''' [[Choi Ting Ting]] (蔡婷婷)
*'''Producer:''' [[Lo Wing Yin]] (羅永賢)

==Viewership Ratings==
{| class="ratingtable"
! Week !! Episodes !! Date !! Average !! Peak
|-
| 1 || 01-05 || 2009-Jun-01 - 2009-Jun-05 || 28|| 31
|-
| 2 || 06-10 || 2009-Jun-08 - 2009-Jun-12 || 28 || 30
|-
| 3 || 11-14 || 2009-Jun-15 - 2009-Jun-18 || 29|| 33
|-
| 4 || 15-19 || 2009-Jun-22 - 2009-Jun-26 || 31|| -
|-
| 5 || 20-24 || 2009-Jun-29 - 2009-Jul-03 || 32|| -
|-
| 5 || 25 || 2009-Jul-04 || 29|| -
|-
| 5 || 26 || 2009-Jul-05 || 38|| 41
|-
| colspan="5" | ''Above based on TVB Jade and High Definition Jade combined''
|-
|}

==Notes==
*'''Production period:''' 2008-Mar to 2008-Jun
*Chinese title ''ID'' stands for [[Wikipedia:Immigration Department (Hong Kong)|Immigration Department]]

==External Links==
*[http://drama.tvb.com/thethresholdofapersona Official site]
*[[Wikipedia:zh:ID 精英|Chinese Wikipedia]]

{{DramaRing|TVB|21:30-22:30 timeslot|[[Rosy Business]]|[[Burning Flame III]]}}

[[Category:HKDrama|Threshold of a Persona]]
[[Category:TVB|Threshold of a Persona]]
[[Category:HKDrama2009|Threshold of a Persona]]