The Litecoin Foundation said on Twitter yesterday that Litecoin founder Li Qiwei, Grin developer David Burkett and SoCalLightning organizer ecurrencyhodler have proposed two proposals for Litecoin upgrades (LIP-0002 EB and LIP-0003 MW). To achieve MimbleWimble (MW) by means of block extension. Upon inquiry, the LIP introduced an optional MW as a new transaction form through an extended block (EB). The extended block runs concurrently with the main chain specification block with an average interval of 2.5 minutes. Inside the EB is where the MW trade takes place.