9月27日一早，黃晉英秘書長首先進行任務分組並宣布分組名單，隨後考察團一行在黃晉英秘書長的帶領下參加SB05Tokyo的開幕式及第一全會等會議，本次大會的主題與行動為化永續為行動（Action for sustainability）、區域化、跨世代以及消弭存在環境、社經、相關利益團體間與地域間的鴻溝。開幕式中，除由大會主席村上周三教授及日本土地、公共建設與運輸部部長Shigetaro Yamamoto先生上台致詞外，本次亦邀請到日本天皇姪子的太子妃蒞臨致詞，也讓所有與會人士有緣目睹日本皇室的風采及所受到的禮遇與尊榮。緊接著，在俐落、不拖泥帶水且幾乎分秒不差的流程掌控下，展開第一全會。邀請到的專題演講人為德國籍的Ernst Ulrich von Weizsacker博士，發表為時一小時，主題為 "Buildings Technology in the Vanguard of Ecoefficiency" 的專題演說，內容大綱為現今世界是貧窮者無能力改善環境，而富有者因改善環境而更浪費現有資源，所以經濟與環保應是行動而不是限制生活的觀念，且以提升資源生產力與提高資源使用效率等概念來代替限制生活，Weizsacker博士並舉出了許多實例，來印證他所提出的理論，並介紹其暢銷全球的著作「四倍數（Factor Four）」供與會人士參考。會後，黃晉英秘書長特別轉達一份 "Symbiotic Civilization" 的講稿予Ernst Ulrich von Weizsacker博士，希望讓他對共生化概念有更完整及全面的認知。

　　In the early morning of September 27, Secretary General Huang Chin-ying assigned the duty to different teams and announced the name list of the teams. Under the leadership of Secretary General Huang Chin-ying, the delegation arrived at the opening ceremony of SB05Tokyo and the First Plenary Session. The subject and action of the conference were : action for sustainability, regions; generation, bridging gaps; and bridging gaps between environmental, social, and economic aspects, various stakeholders concerns, and regional concerns. At the opening ceremony, in addition to the addresses given by Chairperson Shuzo Murakami and Minister Shigetaro Yamamoto of the Department of Land Administration, Public Construction and Transportation of Japan, the Mikado's niece-in-law was invited to deliver a speech, giving people there a chance to see the grace of the royalty and the courtesy and privilege given to them. The First Plenary Session started after a clean and brief but exact process control. It was Dr. Ernst Ulrich von Weizsacker from Germany who gave a one-hour keynote-speech on " Buildings Technology in the Vanguard of Ecoefficiency ". According to Dr. Ernst Ulrich von Weizsacker, poor people in the world were financially unable to improve the environment, while rich people were wasting more resources because they had money to make the improvement. Therefore, economics and environmental protection should be actions more than mere concepts in daily life; and to enhance the productivity and the efficiency of resources should replace restrictions in daily life. Dr. Ernst Ulrich von Weizsacker also gave many examples in real life to support his theories and introduced his world bestseller Factor Four to the participants. After the meeting, Secretary General Huang Chin-ying specially sent a copy of the speech " Symbiotic Civilization " to Dr. Ernst Ulrich von Weizsacker, hoping that he could have a clearer picture and idea of what symbiosis was.

　　在開幕式及第一全會中還有個小插曲，做事予人一向精準、效率及確實印象的日本，這次在餐券的印製上卻出了個小紕漏，讓來自加拿大的iiSBE秘書長Nils Larrson先生逮到機會戲謔了主辦單位。
　　There was an episode between the opening ceremony and the First Plenary Session. There was a minor mistake in the meal ticket so Secretary General Nils Larrson of the iiSBE of Canada had the chance to tease the Japanese who were believed to be accurate, efficiency and down-to-earth.

　　下午，考察團員按所分配的任務組別，分頭參與各分組會議並蒐集發表論文之內容，沒有任務的團員則主動至Special Session的會場報到，參與本次學生會議（Student Session）的成果展現與報告。一如預期，由祐生主導之 "熱帶及亞熱帶地區永續建築之微氣候設計研討會" 的成果吸引許多的注目與迴響，也博得了滿堂彩。晚間，體恤團員辛勞的黃晉英秘書長特別央請導遊挑選位於品川王子飯店38樓Fujikawa高級餐廳，讓連日來處於緊繃狀態下的團員們能一邊眺望東京品川夜景，一邊享用頂級、豐盛的日式涮涮鍋，紓解身心的疲累。
　　In the afternoon, members went to different unit meetings and collected papers presented there according to the duty assignment. Members who had no duty went to the Special Session spontaneously to participate in the accomplishment presentation and report of the Student Session. As it was expected, the accomplishment report of seminar on the workshop 2 : Bio-Climatic Design of SB in Tropical & Subtropical Region hosted by Archilife attracted many supports and echoes, and won heated applause. In the evening, Secretary General Huang Chin-ying asked the tour guide to make reservation at Fujikawa, a high-class restaurant on 38/F of Shinagawa Prince Hotel to thank all members of the delegation for their devotions and toils during the trip. Members of the delegation could partly enjoyed premium and delicious shabushabu and partly appreciate the night view of Tokyo as a reward for their toil.