What is Chen Chien-jen?
{{Infobox officeholder | honorific-prefix = [[His Excellency]] | name = Chen Chien-jen | native_name = {{nobold|陳建仁}} | native_name_lang = zh-tw | honorific-suffix = [[Order of Dr. Sun Yat-sen|OS]] [[Order of St. Gregory the Great|KSG]] [[Order of the Holy Sepulchre|KHS]] | image = 陳建仁院長.png | caption = Official portrait, 2024 | office1 = [[List of premiers of the Republic of China|31st]] [[Premier of the Republic of China|Premier of Taiwan]] | term_start1 = 31 January 2023 | term_end1 = 20 May 2024 | president1 = [[Tsai Ing-wen]] | vicepremier1 = [[Cheng Wen-tsan]] | predecessor1 = [[Su Tseng-chang]] | successor1 = [[Cho Jung-tai]] | office2 = [[List of Vice Presidents of the Republic of China|11th]] [[Vice President of the Republic of China|Vice President of Taiwan]] | president2 = [[Tsai Ing-wen]] | term_start2 = 20 May 2016 | term_end2 = 20 May 2020 | predecessor2 = [[Wu Den-yih]] | successor2 = [[Lai Ching-te]] | office3 = [[Vice Chairman]] of [[National Security Council (Taiwan)|National Security Council]] | 1blankname3 = Chairwoman | 1namedata3 = [[Tsai Ing-wen]] | term_start3 = 20 May 2016 | term_end3 = 20 May 2020 | predecessor3 = [[Wu Den-yih]] | successor3 = [[Lai Ching-te]] | office4 = [[Academia Sinica|Vice President of Academia Sinica]] | term_start4 = 18 October 2011 | term_end4 = 16 November 2015 | 1blankname4 = [[Academia Sinica|AS]] President | 1namedata4 = [[Chi-Huey Wong]] | predecessor4 = [[Andrew H. J. Wang]] | successor4 = [[Andrew H. J. Wang]] | office5 = [[Ministry of Science and Technology (Taiwan)|Minister of the National Science Council]] | premier5 = [[Su Tseng-chang]]<br>[[Chang Chun-hsiung]] | term_start5 = 25 January 2006 | term_end5 = 19 May 200