Core Insights - The article discusses the challenges and efforts of a research team conducting ice observation and sampling in the Bohai Sea during winter, highlighting the impact of sea ice on maritime activities and oil extraction [1][3][5]. Group 1: Research Activities - The Bohai Sea experiences significant sea ice coverage during winter, with over 10,000 square kilometers of ice, affecting nearly 40% of the sea surface [1]. - The research team, led by Li He, consists of 20 members who set up 26 representative observation stations within the core ice area to conduct daily work [3]. - The ice sampling group, led by Cao Xiaowei, faces extreme cold conditions, often resulting in frostbite and challenges in maintaining the integrity of ice samples [3]. Group 2: Operational Challenges - The "Polar" icebreaker faces difficulties in anchoring due to the movement of ice, which increases the risk of dragging the anchor and potentially colliding with other vessels or underwater pipelines [4]. - The team must adapt their operations to nighttime testing to avoid solar influence on their measurements, ensuring more accurate results [3]. Group 3: Technological Advancements - The "Polar" icebreaker has undergone significant upgrades since its inception in 1986, now featuring advanced capabilities for icebreaking and multi-disciplinary scientific research [7]. - The current generation of the "Polar" icebreaker can break through ice up to one meter thick and has capabilities in atmospheric, ice, and geophysical research, placing it at the forefront of international standards [7].