- THIS EVENT HAS ENDED ! You can no longer obtain event item (Protein) or exchange them for metal maiden
First two tables are translated from Chinese wiki. 
Each volume has at least one chapter with a guaranteed L-Protein drop. To get this drop, certain conditions must be met (such as tank compositions or certain rarities). Once L-Protein has dropped from these conditions, it can't drop again. Passing a chapter with a B or higher will drop the L-Protein.
- Cost 8 Protein
- Likely all setups here are correct, maybe less restriction (such as 3-3 can use any 2 ATG)
- THESE ARE CONFIRMED SETUP (and hope no troll edit in chi wiki), DOESN'T MEAN THAT OTHER SETUP OR MAPS WILL NOT WORK
- Report you finding, or look for English version drop reports here Thread:1348
|4||3-3||StuG III Ausf. C||1Blue||2Blue||2Blue|
- Seems that English version is using beta server's setting and some setup here may not work. Please read Thread:1348 for drop reports.
- No9 and 14, highlighted with green, are confirmed to drop protein and not included in the beta table above.
Maps that not included in the tables above