This act is to forewarn Lu Su.
See? My weapon is drinking first.
Actually the halberd is used to test for poison.
When poured on the blade if the wine is poisoned
the Blue Dragon halberd will turn black.
He saw there is no reaction to the wine.
No poison. At this point…
(We) were working on the play,
continuously refining it.
What did I add?
(I added) interaction with Zhou Cang.
He saw no poison.
Shows (the halberd) to Zhou Cang.
Zhou Cang, no poison.
The third cup has no poison either.
Zhou Cang took his own clothing
and quickly wiped the halberd.
(Meaning) the first hurdle is passed.
Lord Guan was not poisoned.
What if the third cup had poison?
What if he had a revolving lining in the wine pot?
He was afraid of a revolving pot, inside there is a revolving lining.
(The wine before) had no poison.
(But) the poisonous wine comes out when the pot is turned.
Then, Lord Guan will be poisoned.
Now he has passed through the first hurdle.
That is, there was no poison.
Seeing no poison,
Lord Guan felt somewhat relieved.