China’s exchange rate
1 yuan = .12(49859)
5 yuan = .65
10 yuan = 1.24
20 yuan = 2.50
50 yuan = 6.25
100 yuan = 12.50
250 yuan = 31.25
500 yuan = 62.49
1,000 yuan = 124.99

Japan’s exchange rate
1 yen = .008(707)
114.85 yen = 1.00
200 yen = 1.74
500 yen = 4.35
1,000 yen = 8.71
2,000 yen = 17.41
5,000 yen = 43.54
10,000 yen = 87.07
15,000 yen = 130.61

I usually cut and carry with me.