What are Taiwan's 9-in-1 local elections?

Taiwan is scheduled to hold "9-in-1" local government elections on Nov. 26. They are called "9-in-1" because voters in Taiwan's 22 cities and counties will cast ballots for candidates vying for nine different local government posts, including city mayors, county magistrates, and members of city and county councils. There will also be a referendum held on a proposed constitutional amendment to lower the voting age from 20 to 18.