1, different orders. Thorn shirt is a plant of Pinaceae and Metasequoia is a plant of Metasequoia.
2. The distribution is different. Taxodium ascendens is distributed in the middle and lower reaches of the Yangtze River to South China, Metasequoia glyptostroboides is distributed in Shizhu County of Chongqing in central China and Modaoxi and Metasequoia glyptostroboides in lichuan county, Hubei.