The Wet Rain Gauge Records and Hunminjeongeum

Jang Yeong-sil sees that the water marks on the rain gauge records do not match the actual device. If this is not a mechanical failure but record tampering, the new character petition becomes evidence, not exaggeration.

Hwang He places the dry opposing memorial and the wet petition side by side. Neither can be ignored, but he must prevent the moment where delay becomes another refusal.