Now with the comments on each combo:
YUN'S SUGGESTED COMBOS
cr.LP → st.LP → st.LK → st.MP → HP Zesshou (Rush Punch) 187 Damage 286 Stun
Connecting the 3F cr.LP into TC1 and finishing off with a special move. If Up Kicks land you can quickly send your opponent towards the corner.
cr.MP → st.MP → HK Nishou (Up Kicks) 222 Damage 340 Stun Note: Depending on the distance, cr.MPx2
Because both cl.MP st.MP are special-cancellable, they're incredibly strong normals. Also, dependent on the opponent and spacing, cr.MPx2 is also possible.
EX Zessho → UC1 440 Damage 200 Stun
It's a bit difficult from mid-screen, but it's a fundamental combo into Ultra.
YANG'S SUGGESTED COMBOS
cr.LK → st.LP → cr.MK → HP Tourou (Mantis Slash/Rekka) 199 Damage 323 Stun
A combo from the 3F cr.LK. Since the link into st.LP is tight, if you chance it to the 4F cr.LP you have more advantage and the combo is easier to do. Since it's easier to do to wake-up attacks if you change the the finishing Zourou to MK Senkyuutai (Roll Kick), choose which to use based on the situation.
Tenshin → cl.MP → HP Tourou 195 Damage 246 Stun
An example of a combo from Zenpou Tenshin. Since both normal and EX put Yang at +7 on hit, you can combo into cr.MK, cl.MK, cl.HP, and other moves.
cr.MK → HP Tourou (two hits) → FADC → UC1 439 Damage 190 Stun
An example combo of connecting Ultra from an FADC. Of course, you not only combo with UC1, but UC2 as well.