Making cell phones takes a lot of materials and tools. Senku begins by upgrading their equipment using the waterwheel Chrome and Kaseki invented and built together.
Wait, Suika, were you going 
through rocks all night?
هل بقيت تفتشين في الصخور طوال الليل؟
Ach, du hast die ganze Nacht
die Steine durchsucht, Suika?
¿Estuviste buscando rocas toda la noche?
¿Estuviste buscando rocas toda la noche?
Suika, t’as trié les pierres
toute la nuit ?
Che c'è, Suika?
O que, Suika? Você ficou 
olhando pedras a noite toda?
Ты чего, Суйка?
Всю ночь камни перебирала?