Exploring the Professional Development and Improvement Strategies of College Teachers' Skills in the Twenty-First Century in the Era of Covid-19

Covid-19, which suddenly broke out in 2019 and has been popular all over the world for more than 3 years, has brought unprecedented changes to human beings. Before that, colleges and universities have already need to change and innovate their curricula and teaching to teach "twenty-first century skills" for students, which are problem-solving and critical thinking, creativity and innovation, intercultural understanding, communications, information, media literacy, computing and ICT literacy, responsibility and leadership, accountability and productivity, self-direction and initiative, adaptability and flexibility. In this situation, TPD (teacher professional development) evokes teachers to satisfy students needs for education in the twenty-first century and in the era of Covid-19 even post-Covid-19, which increases the urgency and necessity. Through the systematic analysis of the relevant research results, summarized strategies of TPD in the twenty-first century Covid-19 and post-Covid-19 era: evaluation of TPD needs, cultivating skills of the twenty-first century, integrating ICT instruction, peer coaching, creating the positive culture of campus, building collaboration, initiative learning, embedding the core values, sustainable professional development, research projects and training teachers' emergency capabilities, to meet teachers' learning and practice, and to address challenges that have existed and may arise in future.