Doudou's whereabouts are at a loss, but Cheng Xiaoshi's persistence brought a turn for the case.
We were unable to find any clues
from the surveillance footage.
لم نتمكن من إيجاد دلائل من  
.مقطع المراقبة
Non siamo riusciti a trovare indizi
 dalle telecamere di sorveglianza.