《徐霞客游记·滇游日记二十八》
于是先向下走近溪边，就见溪水正正地从石门中跃出来，有块巨石挡在门口扼住流水，分成两条水道。
乃先降而就溪，则溪水正从门中跃出，有巨石当门扼流，分为二道。
I decided to walk near the creek and found that the stream was leaping out of the stone gate, and a huge rock in front of the gate diverted the water into two channels.
<s>[INST] Kindly elucidate the central themes in this passage in English: 乃先降而就溪，则溪水正从门中跃出，有巨石当门扼流，分为二道。 [/INST] I decided to walk near the creek and found that the stream was leaping out of the stone gate, and a huge rock in front of the gate diverted the water into two channels.</s>
Kindly elucidate the central themes in this passage in English: 乃先降而就溪，则溪水正从门中跃出，有巨石当门扼流，分为二道。
user
I decided to walk near the creek and found that the stream was leaping out of the stone gate, and a huge rock in front of the gate diverted the water into two channels.
assistant