what stadiums are listed?
workers stadium, development area stadium, helong stadium, chongqing olympic sports center, jinzhou stadium, yellow dragon stadium, hanghai stadium, nanjing olympic stadium, shenyang tiexi stadium, nanchang bayi stadium, qingdao tiantai stadium, shaanxi province stadium, shandong provincial stadium, hongkou stadium, shenzhen stadium, teda football stadium
which stadium has the lowest average attendance?
qingdao tiantai stadium