Because the huge budget was seen by interests from around the world as a pie they were eager to get their teeth into, there was an almighty struggle between the French and the Americans over the Mucha line, and between the Americans, the British and the Japanese over the Tanshui line. In the heat of "battle," there were attacks and recriminations on all sides.
其後招標作業，又因為巨額預算成為各國勢力垂涎的肥羊，木柵線的「美法大戰」、北淡線的「美英日大戰」，熱戰時各方放話，挾怨攻訐。