Sci*** and the first author have no influence on reading PhD. In general, the * * * of sci is the same as that of the first author, which means that the two first authors have the same contribution to this article and can't distinguish the order, so they are written as the same as the first author, which means that the two authors have the same ability. When examining doctoral research ability, such articles will be considered as having the same ability, so it will not affect doctoral study.