Observing the above table, it can be found that in Taipei City, the city with the highest density of locomotives, 7.83% of nitrogen oxides come from locomotive emissions, and more than 10% of non-methane hydrocarbons come from locomotive pollutants. As for carbon monoxide, more than 40% of the emissions from Chiayi and Hsinchu cities come from locomotive exhaust. chart3 Taiwan Smart Mobility Industry Association Watchmaking Proportion of air pollutants in counties and cities with the highest locomotive density | Source: National Air Pollutant Emissions Inventory Information System of Air Protection Department of Environmental Protection Agency, Environmental Database of Environmental Protection Agency Disney's live-action "Mulan", which was drawn after several twists and turns, has caused widespread controversy. In the author's opinion, the historical issue color correction services of "Mulan" deserves the most attention. In this version, Mulan joins the army in the Tang Dynasty, and her opponent is Rouran. This adaptation goes against the historical truth. It is obvious that at the time of the Tang Dynasty, Rouran had already declined, and its northern opponent was the Turks rather than Rouran. Moreover, the story of Mulan did not take place in the Tang Dynasty. The image of Mulan first came from "Mulan Ci", or "Mulan Poem". The "Mulan Poems" are widely regarded as the fifth to sixth centuries, the equivalent of Northern and Southern Chinese folk songs during the Northern and Southern Dynasties. It is generally said that "Mulan Poems" was included in the collection of folk songs "Mulan Poems" compiled by the "Sramana Zhijiang" (also known as "Shizhijiang"), a native of the Chen Dynasty in the south. If the "Poems of Mulan" was indeed produced in the Northern Dynasty, then it is impossible for Mulan to join the army in the Tang Dynasty. Of course, there are also opinions that "The Poem of Mulan" is a work of the Tang Dynasty. However, this opinion is untenable, and its rationale is mostly because some words in "Mulan Poems" have the style of the Tang Dynasty.