**The United Rugby Championship returns this weekend - and the Welsh regions have decamped to South Africa en masse.** There is also an interpro between Munster and Connacht, while leaders Leinster welcome Glasgow Warriors to Dublin. The weekend's other two matches see Ulster host Zebre Parma and Edinburgh travel to Benetton. Meanwhile, Wales and South Africa are back in international action. Here are five things to know ahead of Round 8.