A hundred divisions alliance is difficult. The alliance of senior three and nine teachers refers to the examination jointly organized by the top nine universities in the college entrance examination. The Nine-Division Alliance is an examination between nine schools, which is simpler and more difficult than the Hundred-Division Alliance. PepsiCo Alliance is a test paper initiated by Beijing Hundred Teachers Alliance Education Science and Technology Center, the largest and most influential basic education research institution in China, and jointly issued by hundreds of well-known high schools, outstanding proposition experts and super senior teachers.