The commission went on smoothly, but Cheng Xiaoshi gradually realized that this mission was directed towards an unspeakable memory.
At some point in time,
there is an important node.
،في نقطة ما من الزمن
 .هناك عقدة مهمة
Zu bestimmten Zeiten
gibt es einen Knotenpunkt.
En ciertos momentos
En ciertos momentos,
hay un nudo clave.
Certains évènements 
sont comme des nœuds,
A un tratto della linea temporale,
 c'è un nodo cruciale.
Em algum momento,
existe um ponto importante.