Summon a Valkyrie in the Genshin World and become an adventurer

Lin Yun, who was playing Bengsan, suddenly traveled through time.
But, why is it Yuanshen? Logically speaking, shouldn't it be Bengsan?
Was besieged by a group of Qiuqiu people just after entering the stage?
Fortunately, the Bengsan system has also been brought, and some things have been retained, especially a Valkyrie.
"Qiana, come out... ah ah ah ah!"