Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Taiwan Says Chinese Warplanes Are Crossing a Median Line, But Is There a Median Line? Ralph Jennings TAIPEI - A median line cited by Taiwan's military,when it wards off Chinese fighter jets,has never become a formal agreement,giving the Chinese side license to cross it without violating any agreement, analysts in Taipei say. The line, which runs northeast from near Japan's outlying islands to the southwest near Hong Kong along the middle of the Taiwan Strait, "has just one definition", a Taiwan Ministry of National Defense source said Monday, referencing a mid-2019 report by the government-funded Central News Agency. A former defense minister detailed the line's exact latitudes and longitude coordinates during a legislative hearing in 2004, the report says. A Chinese foreign ministry spokesman said in September the line doesn't exist. Experts in Taiwan say the line, established during the Cold War with U.S. help, never reached the status of a formal agreement. "It's not to say that some previous deal is being violated against Taiwan, because actually no third party was ever in the middle, nor did any two parties sign a legally binding agreement," said Huang Chung-ting, assistant research fellow with the Institute for National Defense and Security Research in Taipei. "It's just an understanding based on politics." Validity of the line, which is in place to head off mishaps, has become a sore point this year as Chinese warplanes regularly cross it, often to be scrambled away by Taiwanese planes. As of October 7, Chinese military aircraft had flown 49 times across the median line in 2020, the highest number in any year since 1990. .