The Mould King 23005 Fast RC Motorcycle is designed and authorized by Green Gecko. You could learn more information about original design from following link: https://rebrickable.com/mocs/MOC-17249/Green%20Gecko/fast-rc-motorcycle-it-really-works-and-stands-up-30kmh-with-buwizz-20/#details It only has 383 pieces and costs less than 2 hours to build. This Motorcycle is very fast and really fun to play. However it needs some speed to be balanced. So you may only play it in quite large open area with smooth surface such as basketball court. Join Mould King Fans group if you are interested. https://www.facebook.com/groups/mouldkingfans ... https://www.youtube.com/watch?v=rbMDayTTJuA

This Mould King set is based on Sheo's creation, find more about the design from https://www.eurobricks.com/forum/index.php?/forums/topic/159126-moc-bucyrus-rh400-mining-shovel/ RH400 is ever the biggest Hydraulic Mining Shovels in the world. You can find detail information of RH400 from https://www.holtcat.com/Documents/PDFs/bucyrus/rh400.pdf 6090 FS is reworked version of RH400, find more from https://www.cat.com/en_US/products/new/equipment/hydraulic-mining-shovels/hydraulic-mining-shovels/18490663.html The set consists of 4062 pieces, 9 motors and 3 Li-ion batteries. Building experience is super challenging, you must not make any mistake otherwise you will experience disassembling disasters. You can use RC or mobile app to control the excavator. It's really fun to build and play this set. Building Instruction https://drive.google.com/file/d/1-f6zMhTyA-U9cmUruPXEV3Npi0qjsaHm/view?usp=sharing Join Mould King Fans group if you are interested. https://www.facebook.com/groups/mouldkingfans ... https://www.youtube.com/watch?v=i9b-JC4JIYE

MOYU is a new player in the market from early time this year. They have rolled out several original technic sets including one built in the video. Although it is a RC design set, I built static version this time by using fake motors. The 1:8 scale sets are too heavy to move in my opinion. MOYU did great job in designing the instruction, the structure is solid and building steps are relevant. The overall product quality is decent because they also use Gobricks parts just like Mould King. If you are fan of 1:8 scale super car sets, you could try this one. ... https://www.youtube.com/watch?v=JBk2kS7rx00

Both bricks gun are originally designed by Mould King. They shoot rubber bands as bullets. Very easy to build and fun to play. Like it! Join Mould King Fans group if you are interested. https://www.facebook.com/groups/mouldkingfans ... https://www.youtube.com/watch?v=dUyGnBDGTKY