Sanchez has been one of Arsenal’s standout performers since his arrival at the north London club from Barcelona in the summer of 2014.
The Chile international has been a regular fixture in Arsene Wenger’s first team and has scored 11 goals and made eight assists in all competitions for the Gunners so far this season.
Sanchez holds his hometown of Tocopilla close to his heart and often visits during his time off.
The 27-year-old has had two football pitches built for children of the town to play on and has staged various charity events in his native homeland.
And the former Udinese star has explained his thinking behind his charitable work.
Speaking to Arsenal Player, Sanchez said: “Every time I go [to Tocopilla] I try to set up events and get gifts just to see the smiles on small children’s faces.
“I honestly believe that children are the most important thing in the world. They learn from adults and it’s very important to be good role models.”
He added: “I built two football pitches because I wanted young kids to have a decent pitch to play on, because I didn’t have one when I was younger.
“I’m lucky because I’ve had the opportunity to leave the country and play football, but it’s a small town and opportunities are not common.
“People can end up going down the wrong path with alcohol and drugs, and that’s bad news for kids. When I’m there I try to set up events where I play with the kids and try to boost them.”
Arsenal host Watford on Saturday.
MORE: Latest Man Utd news
MORE: Latest Arsenal news
MORE: The latest football news