@egreg contributed packages and answers of course don't count!

@egreg One thing... there a huge white space before the section heading...

there was not such spacing before...

Also, can I change the font to that of Herbert's answer style?

@cfr @egreg Turns out it is the room next to me, the one that has had a flyier stuck in it for a week. I think they are on vacation.

@EnthusiasticStudent Change the spacing parameter (marked “space before”) in the \titlespacing command. For the font, change \Large\bfseries into \Large\bfseries\sffamily

@Canageek Add to the proposed note that you're also annoyed by people doing long vacations.

@egreg Space Above?

@EnthusiasticStudent Yes

@EnthusiasticStudent But I don't find it so huge.

@DavidCarlisle it turns out the problem was \renewcommand\familydefault{\sfdefault}

@egreg Yes.... that's not so huge; you are right. Before, my CV had almost no white space...

@egreg Where can I bring text color code?... \textcolor{darkcandyapplered}

\newcommand{\betweenrules}[1]{%
  \makebox[0pt][r]{\color{darkcandyapplered}\vrule width 2cm height 1.5ex \hspace{1em}}%
  \color{darkcandyapplered}%
  #1% the title
  \hspace{1em}%
  \leaders\hrule height 1.5ex\hfill
}

@EnthusiasticStudent ^^^^^

@egreg That or they moved out and forgot the alarm clock; Start of September is an ODD time for a grad student to go on vacation.

@egreg I am also using the endnotes package... there is a useless section part before the note appearing in the end of the document... can I omit it?

(sorry I have many questions :((()

@EnthusiasticStudent \renewcommand\enoteheading{} in the document preamble.

@egreg Thank you for your kindness... I do not know how to thank you, and I am so sorry if I asked too many questions. I chose your answer as the best answer to my question. Thanks.

@EnthusiasticStudent You owe me a beer next time I get in your neighborhood. ;-)

@egreg :)) sure... I wrote it on the wall of my room to not to forget it

@EnthusiasticStudent 99 bottles of beer on the wall…

99-bottles-of-beer.net/lyrics.html

@egreg Let's make it 100 beers, because you are so kind and have so much knowledge

@egreg Wow... I have never heard about it

@EnthusiasticStudent Season song: a favorite among rugby players after a match.

@egreg good to hear that... thanks...

@DavidCarlisle Problem is, it also turns up with \setmainfont[Ligatures=TeX]{Helvetica Neue LT Com}

well that is with also microtype present