There's a total of 29 letters in the Chinese Pinyin, 23 being initials.
b, p, m, f ➜ consist of uo sound ➜ buo, puo, muo, fuo.
d, t, n, l, g, k, h ➜ consist of a sound like ba sound in English ➜ da, ta, na, la, ga, ka, ha.
j, q, x ➜ consists of the sound ee like eat in English but without the t sound ➜ jee, chee, shee
zh, ch, sh, r ➜ consists of err sound ➜ jerr, cherr, sherr, err
z, c, s ➜ dragging the sound ➜ zzz, ccc, sss
y, w ➜ iee like ek in english but without the k sound ➜ iee, wuu