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Professors GuoFeng Qu  and ShaoJun Lyu , of Beijing Normal University, present a banner with their college motto – "Steadfastness and Innovation, Resilience and Future" – to Dr. Irving Kron , interim dean of the UA College of Medicine – Tucson, and UA lib (second from left) Professors GuoFeng Qu and ShaoJun Lyu , of Beijing Normal University, present a banner with their college motto – "Steadfastness and Innovation, Resilience and Future" – to Dr. Irving Kron , interim dean of the UA College of Medicine – Tucson, and UA librarian Yan Han .