Common application short answer--internship at a department store

In July 2007, I worked as an intern for 4 days at Zhongyou Department Store. I was assigned to work with the Enterprise Planning Department. The manager introduced to me the special marketing position of the store: young adults and teenagers. Our shop had stocks of merchandise especially for teenagers.
On the second day of my internship, the opponent store launched a marketing campaign and grasped many clients to our surprise.
Anxiously, I asked my supervisor "Whom does our opponent appeal to most?"
Answered: "Young working adults"
I asked: "Since our shop aims at appealing to young customers, how about a promotion for teenagers?"
"Score!"
Our promotion plan with special discount for students came out days later.
An emergency promotion was launched, with great success.
After this internship, I knew that a market campaign is like playing chess: you need to make full use of your advantages to beat your opponent.

In July 2007, I worked as an intern for 4 days at Zhongyou Department Store. I was assigned to work with the Enterprise Planning Department. The manager introduced to me the special marketing position of the store: young adults and teenagers. Our shop had stocks of merchandise especially for teenagers.
On the second day of my internship, the opponent store launched a marketing campaign and grasped many clients to our surprise.
Anxiously, I asked my supervisor "To whom does our opponent appeal the most?"
Answered: "Young working adults"
I asked: "Since our shop aims at appealing to young customers, how about a promotion for teenagers?"
"Score!"
Our promotion plan with special discount for students came out days later.
An emergency promotion was launched, with great success.
After this internship, I knew that a marketing campaign is like playing chess: you need to make full use of your advantages to beat your opponent.

This is great! You might want to mention chess at the beginning, so that the ending wraps it up nicely...