Prof. OUYANG Qi, Prof. Wei Ping, Prof. Lin Yihan, Dr. ZHANG Haoqian, ZHANG Yihao and other teachers helped us during our brainstorming and gave us useful suggestions.

Prof. He Xinqiang and Prof. Wang Qingsong kindly provided the laboratory to us.

Li Cheng gave us invaluable guidance and great help, from the beginning to the end.

Fu Cai, Wu Jiegen and Huang Zhecheng gave us meticulous advice.

Prof. Yuan yingjin and Prof. Dai Junbiao provided us with the plasmid of carotene-synthesizing enzymes.

Prof. Shu Xiaokun provided us with the sequence of HOTags.

Zhang Jing, Fan Yingying and Kuang Xiangyu managed to provide some necessary reagents for us.

Bio&Chem Reagent Management Platform, Peking University supported us on reagent purchase.

Prof. Tang Chao and Dr. Liu Qi provided us with the usage of fluo micro.

Prof. Lou Chunbo and Dr. Zong Yeqing showed us the design and function of a low-cost fluorescence stereoscope.

Prof. Zhang Chong and Zhou Yikang kindly helped us on carotene extraction and HPLC.

Prof. Xu Luping taught us how to transform a 3D printer into a microscope.

Fan Yingying and Zhang Zhibo helped us on the usage of fluorescent microscope.

Prof. OUYANG Qi, Prof. Wei Ping, Prof. Lin Yihan and Prof. Qi Zhi participated in our presentation rehearsal and gave suggestions for revisions.

Prof. Ouyang Qi instructed us on the modeling of metabolism.

Prof. Louis Tao, Prof. Dong Bin and Prof. Ge Hao kindly helped us with the stochastic simulation in modeling.

Dr. Zhang Haoqian and Zhang Yihao gave us some valuable instructions on human practices and made an introduction of frontier bio-industry to us.

Zhang Jing helped us on the details of experimental procedures.

Peking University Kindergarten gave us an opportunity to introduce synthetic biology to children.

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