Known as a conservative Democrat, Yih's many accomplishments included passage of laws establishing Enterprise Zones to promote job creations; Office of Oregon Trade Representative in Shanghai to enhance trade between Oregon and China; child support legislation to expedite child support and reduce public assistance; equal property tax relief for Linn County residents by correcting a legislative drafting error permanently; appropriation for regional Adolescent Drug & Alcohol Treatment Center; school curriculum to encourage sexual abstinence to reduce teen pregnancy; lottery funds for the rehabilitation and preventive maintenance of covered bridges and a study for assessing the health of the Willamette River. Yih was also known as a strong supporter of field burning because it is a more effective control of disease and insects than the use of chemicals. Yih introduced and passed legislation to establish sister state relationship with Fujian province, China in 1983. She accompanied Oregon governor Atiyeh to sign the agreement with Governor of Fujian province in 1984. Yih organized legislative leadership trade delegation to visit Fujian province and other cities in China in 1992, 1997, 2000, and 2002. Yih was awarded Honorary Citizen of Fujian Province in 1994.