Scan commissioned by me for myself. Wish this was longer but what can you expect when the doujinshi itself costs $4.
Hopefully we can look forward to seeing older releases from this circle soon enough.
Please support the circle if you can http://www.doujinshi.org/book/662174/BATTLE-END-CHINA/ http://www.toranoana.jp/mailorder/article/04/0030/17/24/040030172448.html
I did some hand-translation for this using KanjiTomo. According to what I understood from the text, China just completed a gunpla for Sei and the part where he does her is only her imagination, with the dialogue during that part being Sei complimenting on her handiwork.