万 reasons to be encouraged by horse chestnuts

万 is 10,000, from second-grade kanji.  It shouldn't really be a part of the following, because 厉 is actually a simplified version of 厲, meaning whetstone.  But we take what we can get.
栃, Japanese horse chestnut: There are 10,000 horse chestnut trees on that cliff.
                                                  That'll be 10,000 crashes in the next storm.  I have
                                                  no idea why this is important enough to be
                                                  常用 (regular-use) 漢字.
励, encouragement:                Encouragement gives people 10,000-fold power.
                                                  Stand at the cliff and deliver it!