Currently, Yuan Shao's efficiency and Liu Bei's efficiency are basically similar. Over on Yuan Shao's side, they received information about the pontoon bridge from Sheni Pei. From finding specialists and materials to selecting a site and starting construction, they didn't waste much time, though it's clear they were a bit haphazard in choosing the location.
Similarly, on Liu Bei's side, upon hearing that Yuan Shao might be constructing a pontoon bridge, they immediately intensified their vigilance. As for specialists and materials, there was no need to prepare, and tasks related to hydrology or site selection were also unnecessary.
Not to mention that Sun Qian's skills in basic bridge and city infrastructure construction have been maxed out over the years. Even when it comes to materials, Sun Qian had long been prepared.
