lustering
  上光
  Lus·ter, Lus·tre, v. t. [imp. & p. p. Lustred p. pr. & vb. n. Lustering, or Lustring.] To make lustrous. [R. & Poetic]
     Flooded and lustered with her loosened gold.   --Lowell.
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  Lus·ter·ing, n.
  1. The act or process of imparting a luster, as to pottery.
  2. The brightening of a metal in the crucible when it becomes pure, as in certain refining processes.
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