camera in the lift, and he/she tried to avoid appear in the video and managed to lure the girl away and killed her and put her in the water tank, maybe somebody work for the hotel??
this is a copy from the website and I think its resonable....:
一點也不怪異,讓我來還原事情的真相吧。女子進入電梯輕鬆歡快,頑皮的按了四個樓層鍵,這說明後麵還有一個人準備進入。等了一會兒,沒有人進來,女子躲在電梯角落想要給對方一個驚嚇,從女子小跳出去嬌嗔的舉動分析,對方應該是一個關係親密的男子。電梯門久久沒有關閉是因為此男子一直按著外麵的開關,女子雖然攤開雙臂表示不滿,最終還是改變了下樓的計劃,跟隨男子回去了房間。電梯關門下行,在設置的樓層開關門,正常運行。