Core Insights - Xu Xing, a prominent paleontologist, has made significant contributions to the field of dinosaur evolution, having named over 80 new dinosaur species and published more than 300 papers [3][5][6]. Group 1: Research Contributions - Xu's discovery of feathered dinosaur fossils in Liaoning Province in 1997 marked a pivotal moment in understanding dinosaur evolution, leading to the identification of the "unexpected Beipiao dragon" [2][4]. - The four-winged dinosaur hypothesis proposed by Xu and his team challenged traditional views on the origins of bird flight, suggesting that these dinosaurs may have had gliding capabilities [4][5]. - The discovery of the "strange-winged" Qiyilong in 2015 further contradicted previous beliefs about feathered flight evolution, showcasing Xu's innovative approach to paleontological research [5][6]. Group 2: Fieldwork Challenges - Xu's fieldwork often involves extensive and arduous expeditions in remote areas, where the likelihood of significant discoveries is low, with teams sometimes walking 20-30 kilometers daily without finding fossils [6][7]. - The harsh conditions of fieldwork, including limited resources and encounters with wildlife, are common, highlighting the dedication required for paleontological research [6][7]. Group 3: Public Engagement and Education - Xu has actively engaged in science communication, believing that both research and public education are equally important for fostering a scientific culture [9][11]. - His efforts in popular science include writing articles and giving lectures aimed at inspiring children and the general public to appreciate science and nature [10][11].

Group 1: Exhibition Highlights - Recent exhibitions in Shanghai and Beijing showcase a variety of themes, including architecture, design, and art [1] - The exhibition of Alvaro Siza at the Shanghai Contemporary Art Museum features over 100 pieces, including manuscripts, models, and photographs, highlighting his architectural philosophy [3][4] - The Swiss Design Exhibition at the Fosun Art Center emphasizes Switzerland's impact on global innovation and design, showcasing historical inventions and modern products [6][7] Group 2: Specific Exhibitions - The "Dragon Roars Across the Land: Chinese Dinosaur Exhibition" at the Shanghai Natural History Museum presents 118 dinosaur specimens, illustrating the evolution of dinosaurs in China [9][10] - The "Ancient Rhinoceros Treasures" exhibition at the Shanghai Museum features over 100 pieces of rhinoceros horn artifacts, showcasing the artistry and cultural significance of this material [11] - The "Hello Kitty Cosmos" exhibition in Beijing combines technology and art, celebrating the iconic character's 50th anniversary with interactive displays [16] - The "Lin Xi Ink Painting Exhibition" at the Beijing Jarde Art Center features over 500 works, reflecting the artist's integration of traditional culture into contemporary art [17][18] - The dual exhibition of Liao Fei and Chen Ke at UCCA highlights their unique artistic approaches, focusing on materiality and the contributions of women in the Bauhaus movement [19][21] - The "Brilliance and Epic: The Art Poems of Alphonse Mucha" exhibition in Beijing presents nearly 200 works, exploring the artist's influence on the Art Nouveau movement [20][22] - The "Official Chinese Color Painting: Heritage and Innovation" exhibition at the Palace Museum showcases the history and aesthetic of traditional Chinese architectural color painting [23][24]

Core Insights - An international research team has identified a fossil in Brazil that may belong to one of the oldest dinosaur ancestors, providing new clues about dinosaur origins [1][2] - The fossil, approximately 237 million years old, was discovered in the city of Santa Cruz, Brazil, and is classified under the Silesauridae family, named "Itaguyra oculta" [1][2] Group 1 - The fossil analysis indicates that it consists of pelvic bones and belongs to a reptile from the mid-Triassic period, previously unrecognized [1] - The Silesauridae family is debated in its relationship to dinosaurs, with some considering it a close relative and others viewing it as a direct ancestor [2] - The research suggests that Silesauridae should be classified within the dinosaur category, specifically as an early representative of ornithischian dinosaurs [2] Group 2 - The discovery fills a critical gap in the evolutionary history of dinosaurs and supports the idea that Silesauridae may represent early ornithischian dinosaurs [2] - If the hypothesis is confirmed, "Itaguyra oculta" could be recognized as one of the oldest known dinosaurs in the world [2]