Your hemi-semi-weekly Vietnamese proverb
“Có công mài sắt, có ngày nên kim”: “If you work hard enough at sharpening iron, one day you’ll have a needle” (literally “Put effort [into] sharpen[ing] iron, have one day in the end [a] needle”). Basically, insofar as I can tell, the closest equivalent would be that nothing is obtained without hard work. Again, I’m pretty sure of my translation, a lot less sure about my reading of the proverb. Progress continues apace; I’m turning to vocabulary…