Clip, ceiling base, and method for constructing same

A clip that fixes a ceiling joist intersecting a ceiling joist receiver to the ceiling joist receiver, the clip comprising:

• a top portion having a width of the ceiling joist receiver;
• a first hanging portion hanging down from one end of the top portion, and provided with, at a lower portion, first engaging projections extending left and right to engage the ceiling joist;
• and
• a second hanging portion hanging down from another end of the top portion, and provided with, at a lower portion, second engaging projections extending left and right to lock the ceiling joist,
• wherein the first hanging portion has a length longer than that of the second hanging portion, and
• wherein a recess is provided only at an intermediate position of the first hanging portion, said recess extending in a direction toward the second hanging portion and the second hanging portion has no recess extending in the direction toward the first hanging portion.