Yes, if you want to pass the thesis, you must do more than two EI SCI. Less than this is only a bonus, which means that if you can't send more than two EI SCI works, it still depends on your grades. Other papers are useless.

The American Science Citation Index (SCI) was founded by the institute for scientific information in Philadelphia in 1957, and it is a citation database created and published by institute for scientific information (ISI)1961+0. SCI (scientific citation index? ), EI (engineering index), index of scientific and technological conference proceedings? ) is one of the three world-famous scientific and technological literature retrieval systems, and it is an internationally recognized main retrieval tool for scientific statistics and scientific evaluation, among which SCI is the most important, and its founder is eugene garfield (,1September 6,1925 ~ 201February 26, 7).